Relevant bibliographies by topics / Structure strenght

Academic literature on the topic 'Structure strenght'

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Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Structure strenght"

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Grządziela, Andrzej, Bogdan Szturomski, and Marcin Kluczyk. "Modeling of the Minehunters Hull Strenght." Advanced Materials Research 1036 (October 2014): 189–94. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.189.

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The paper presents problems of modeling the ship’s hull subjected to the load of shock wave associated with non-contact underwater explosion. The article presents equations for describing the parameters of shock wave subjected to an impulse load. The paper presents a proposal of identification of a degree of hazard the ship’s hull forced from underwater explosion. A theoretical analysis was made of influence of changes of hull structure in vicinity of hull. Modeled signals and hull structure were recognized within sensitive symptoms of three sub models: model of hull structure, model of impact and model of propulsion system. All sub models allow testing forces and their responses in vibration spectrum using SIMULINK software and FEM models. The results of testing allowed performing simulations of a similar nature to the actual loads of underwater explosions. Virtual model of the hull of the ship responds in a similar manner to the real impacts.
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Almasi, Adrian, Anca Porumb, Angela Codruta Podariu, Liana Todor, Sergiu Alexandru Tofan, and Ramona Amina Popovici. "The Effects of Nanofillers on Composite Materials Mechanical Properties." Revista de Chimie 68, no. 1 (February 15, 2017): 192–99. http://dx.doi.org/10.37358/rc.17.1.5417.

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The goal study is benchmarking flexural strength FS of compressive strength CS, compression diametrical DTS (diametrically tensile strenght) and Vickers hardness for two nanocomposites experimental AD1 and AD3 achieved within the Research Institute in Chemistry Raluca Ripan Cluj Napoca and for the commercial product of the Kerr Premise company �. Electron microscopy aspects pre- and post-fracturing are also shown to highlight the structure of materials and spread
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Da Silva, Josivaldo Godoy, Desirée Ferro Scapinelli, Josivaldo Godoy Da Silva, Lailson Moura Fé, and Iandara Schettert Silva. "Biomedical Mechatronic Dynamometer to Support the Evaluation of the Effects of Leprosy Through the Palmar Holding Strenght and the Tweezer Holding Strenght." International Journal for Innovation Education and Research 8, no. 1 (January 31, 2020): 109–18. http://dx.doi.org/10.31686/ijier.vol8.iss1.2125.

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The hand can suffer the effects of several diseases among the most serious, leprosy stands out, which is considered infectious and can generate loss of muscle strength, atrophy, deformity and physical, mental and social disability. For the World Health Organization (WHO) and also doctors and physiotherapists, it is necessary to evaluate the diseases in an objective, reliable and early manner in order to propose appropriate treatment and follow their evolution. This research proposed a biomedical mechatronic dynamometer in order to support the evaluation of the effects of leprosy by means of palmar grip strength and grip strength of tweezers performed by hand. The experimental research was developed at the Federal University of Mato Grosso do Sul and consisted first of all in the survey of the demands of the health area in relation to the biomedical dynamometer being consulted the following databases: Medical Literature Analysis and Retrieval System Online (Medline); US National Library of Medicine National Institutes of Health (PUBMED) e Institute of Electrical and Electronic Engineers (IEEE). The mechatronic biomedical dynamometer consisted of three fundamental parts: mechanical structure, electronic signal conditioning circuitry and digital information processing. The mechanical structure was designed to withstand a strenght of up to 700 N, developed in brass because this metal has low cost, has less mass and also because it is easier to machine than steel. The oval shape of the structure contains two lateral and thin regions that measure 2 cm thick, 3 cm wide each and aim to concentrate mechanical stresses in order to sensitize the strain sensor consisting of the four linear strain gages, model N2A-XX-S5262P-350/E4 and nominal resistance of 350 Ω, from the company Micro-Measurements, which showed accuracy of 98%. The mechanical structure also has a stainless-steel support that measures 1 cm thick and 3 cm wide located at the bottom and on which was glued a cushion to support the palm of the hand. This support can be replaced by other models that also contain a cushion that considers the presence of injuries or deformities in the hand. The mechanical structure also has a upper support that also measures 1 cm thick and 3 cm wide, to which four pressure sensors developed with rosette strain gages model N2K-XX-S5294R-350/DP/E4 with a nominal resistance of 350 Ω, from the company Micro-Measurements, were fixed and which showed an accuracy of 99.5%. The deformation sensor is stimulated by the application of palmar grip strenght while the pressure sensors are stimulated by the realization of index, middle, annular and minimum finger gripping strenght. In addition, these sensors are connected to Wheatstone Bridges whose feeds and also the responses are processed by five signal conditioning circuits developed with operational amplifiers LF 356, OPA 27 and OP27 GP of the company Burr-Brown, whose structure consists of voltage oscillator, amplifier, band pass filter, buffer and peak detector that generates DC voltage that feeds the data acquisition board. The answers on this board are sent to the Inspiron 15 3000 microcomputer from Dell, which has installed Labview software from National Instruments, which processes the information, stores, plotts the palmar grip strenght and pinch grip strenght graphs and can also send the information over the Internet. This research has the potential to obtain accurate information on the effects of leprosy in the hand that can support the evaluation, diagnosis of health professionals, follow up the evolution of the disease and the treatment adopted.
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Zygoń, P., and Z. Nitkiewicz. "Specific Bending and Compressive Strenght of Poly(Vinyl Alcohol)-CNT Composites." Archives of Metallurgy and Materials 61, no. 2 (June 1, 2016): 993–96. http://dx.doi.org/10.1515/amm-2016-0169.

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Abstract Carbon nanotubes are one of the strongest materials of unique mechanical, optical, electrical and electronic properties. Because of that they are mainly used as semiconductor materials constituting the reinforcing phase in composite materials. The paper presents properties of polymer composites reinforced with carbon nanotubes (CNT) containing various mixtures of dispersion. Produced composites featured various content carbon nanotubes: 20%, 30%, 40% i 50%. Macroscopic observations were carried out on ready to check composites, if pores exist in the structure and whether the reinforcement has been distributed in the entire volume. Bending and compressive strengths tests were performed and densities of individual composites were measured to determine the specific strength. Composite materials strengthened with carbon nanotubes feature a very low density and a very good mechanical strength, which makes them a good structural material.
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Fauzi, Hendro Ahmad. "EVALUASI KINERJA DAN PERBAIKAN STRUKTUR BETON GEDUNG PENDINGIN AIR = EVALUATION ON THE PERFORMANCE OF AND REPAIR OF THE CONCRETE STRUCTURE OF A COOLING WATER TOWER." Material Komponen dan Konstruksi 13, no. 1 (January 9, 2019): 9. http://dx.doi.org/10.29122/mkk.v13i1.1655.

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This paper presents the evaluation of performance and strenght ofstructure by visual inspection and quality testing of concrete in the field by using aSchmidt hammer and UPV. The evaluation on the performance of the structure,strength columns, beams and plates refer to SNI-2847-2002, in which theimplementation of earthquake loads was based on SNI-1726-2002.The paperproposes improvements and retrofitting necessary structures. SAP2000 is usedfor structural analysis necessary to obtain the required strength values (Ru).Beton2000 is used for structural analysis of existing conditions in order to get thedesigned strength values (Rn). The structure components are in safe condition ifits design strength is greater or equal than required strength or (Ø.Rn) ≥ Ru.Improvements were made to the structural element by coating and injectionmethods.Keywords : structural performance evaluation, improvement AbstrakMakalah ini menyajikan evaluasi kinerja dan kekuatan struktur denganmetode pemeriksaan secara visual dan pengujian mutu beton di lapangandengan alat Schmidt hammer dan UPV. Evaluasi kinerja struktur, kekuatankolom, balok serta pelat mengacu pada SNI-2847-2002, dengan penerapanbeban gempa berdasarkan SNI-1726-2002, serta memberikan usulan perbaikandan perkuatan struktur yang diperlukan. SAP 2000 digunakan untuk analisisstruktur guna mendapatkan nilai kuat perlu (Ru). Beton 2000 digunakan untukanalisis struktur kondisi existing guna mendapatkan kuat rencana (Rn).Komponen struktur dikatakan aman jika kuat rencana lebih besar atau samadengan kuat rencana atau (ф . Rn) ≥ Ru. Perbaikan elemen struktur dilakukandengan metode coating dan injeksi..Kata kunci : evaluasi kinerja struktur, metode perbaikan
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Rabinovich, M. Kh, and M. V. Markushev. "Influence of Microcrystalline Structure and Superplastic Deformation on the Constructional Strenght of Aluminium Alloys." Materials Science Forum 170-172 (October 1994): 219–24. http://dx.doi.org/10.4028/www.scientific.net/msf.170-172.219.

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Liu, Shu Ying, Guang Bao Liu, Zhong Hao Heng, and Kuan Xu. "Research on Interface Structure and Fracture Mechanism of Diffusion Bonding of Titanium Alloy/Cu/Stainless Steel." Applied Mechanics and Materials 117-119 (October 2011): 380–84. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.380.

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Using analysis methods of stretching test，SEM，EDS and microhardness test to investigate and research the mechanical properties, the fracture mechanism，the reacting phases are produced and the distribution range of vacuum diffusion bonding joints of Ti-6Al-4V/Cu/304. The results show that when bonding pressure is 5.0 MPa, the tensile strenght of the joint increases at first, but decreases with the increasing of bonding temperature and time, When bonding temperature is 1223K, bonding time is 3.6ks, there is a maximum tensile strength that is 163 Mpa. However, it will be disadvantageous to the performance of the joints, when bonding temperature and time extended overly. Using Copper foil as the interlayer, the intermetallic compounds did not generate in interface of Cu/304，Therefore, it formed multi-phase transition organizations by solid solution, intermetallic compounds in interface of Titanium alloy/Cu，such as TixCuy, TixFey and so on. The effect of TixCuy on strength of the joints is slightly larger than TixFey compound. The fracture mainly happened in the titanium alloy side Ti2Cu intermetallic compound in region Ⅱfor the source dehiscence, developping inⅡ-Ⅲ area junction weak intermetallic compounds of diffusion layer. It is brittle fracture. Therefore, it is the main way to improve the joint strength by improving the interface structure of titanium alloy/Cu side.
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Fauzi, A. Rizki, and Markawie Markawie. "DESIGN OF COMPOSITE GIRDER STRUCTURE BRIDGE OF SELUANG-1 RIVER PT LIFERE AGRO KAPUAS, KAPUAS DISTRICT." CERUCUK 4, no. 1 (June 7, 2021): 1. http://dx.doi.org/10.20527/crc.v4i1.3576.

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The bridge at the Seluang-1 river is located around the palm oil plantation land owned by PT Lifere Agro Kapuas, Kapuas Regency, Central Kalimantan. In this Seluang-1 river, a bridge is planned to be built to facilitate the mobilization of palm oil plantation crops and other matters as well as transportation in the PT Lifere Agro Kapuas area because before there was a bridge the transportation traffic was cut off by the river so it had to circle quite a long way. The bridge is designed as a bridge with composite girder structure type. The methodology in the design of loading uses the SNI 1725-2016 concerning on the Loading Standards for Bridges and SNI 2833-2016 concerning on the Earthquake Resilience Planning Standards for Bridges. For methodology in designing concrete structures refer to SNI 2847-2013 concerning Structural Concrete Requirements for Buildings and methodology in designing steel structures refers to SNI 1729-2015 concerning Specifications for Structural Steel Buildings. The material used for abutment uses reinforced concrete material. The methodology in calculating the bearing capacity of the foundation uses the method by Mayerhof and also the method by Kazuto Nakazawa, while the methodology in calculating the lateral bearing capacity uses the Broms method, with the efficiency of the pile using a graph by O’Neill. From the results of topographic measurements taken a bridge design with a span of 30 m with a total bridge width of 7 m. The slab design is 25 cm thick with the compressive strenght of concrete is fc’ 30 MPa (K-350). The steel girder beam used WF Profile 1350.800.100.130 and the diaphragm beam used WF Profile 250.125.6.9 with BJ55 steel quality (fy 410 MPa). Whereas in the lower structure, the abutment designed with a height of 350 cm, a width of 320 cm and a length of 850 cm, was used with compressive strenght of concrete is fc’ 30 MPa (K-350). In the foundation used Spun Pile type piles with a diameter of 60 cm with a depth of 30 m piling as much as 8 piles on one abutment. Obtained Qallow = 116,37 tons > Qload = 114,69 tons so that the foundation is declared safe. The planned budget for the construction of a bridge on the Seluang-1 river is Rp 8.990.566.000,00.-
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Perijoc, Dumitru-Silviu, and Leonard Domnisoru. "Evaluation of the vertical strenght of a 3000 tdw barge using the equivalent beam approach." Analele Universităţii "Dunărea de Jos" din Galaţi Fascicula XI Construcţii navale/ Annals of "Dunărea de Jos" of Galati Fascicle XI Shipbuilding 44 (December 3, 2021): 101–4. http://dx.doi.org/10.35219/annugalshipbuilding/2021.44.15.

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For the preliminary design stage, the evaluation of vertical strength is mandatory for the preliminary scantling of the structure. This paper presents the evaluation of the vertical sectional efforts by equivalent beam approach, using the 3D-CAD lines plan of a 3000 tdw barge and mass diagram. For numerical analysis the own program P_QSW is used, for sagging and hogging wave condition, ship headings 0 and 45o, wave height max. 1.2 m. The vertical sectional efforts are compared with the maximum bending moment and shearing force prescribed by the classification societies for the 3000 tdw preliminary vertical strength assessment.
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Javed, Raja Ahsan, Shi Fan Zhu, and Feng Chun Jiang. "Importance of Material’s Dynamic Stress Intensity Factor Calculation in the Design of High Strenght Structures." International Journal of Engineering Research in Africa 15 (April 2015): 97–106. http://dx.doi.org/10.4028/www.scientific.net/jera.15.97.

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The researchers and scientists have concluded that material dynamic fracture properties must be considered during the design stage of the modern structure. The dynamic stress intensity factor is very important in understanding of material dynamic behavior. Keeping in view the importance of the materials dynamic stress intensity factor: an efficient and reliable numerical-analytical procedure is developed for calculation of dynamic stress intensity factor. For this, three-dimensional model of a Modified Hopkinson Pressure Bar (MHPB) and a specimen is modeled and analyzed with the ANSYS software. Transient dynamic analysis technique is used for simulation of load-variations as a function of time. As an output of analysis, values of load point displacement and Crack Mouth Opening Displacement (CMOD) are obtained. These values are substituted into two different analytical formulas for calculation of a dynamic stress intensity factor. The results obtained are compared with previous published results, and a good agreement is found.
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Dissertations / Theses on the topic "Structure strenght"

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Щукіна, Людмила Павлівна, Георгій Вікторович Лісачук, Ярослав Олегович Галушка, Олена Юріївна Федоренко, and Лариса Олександрівна Міхеєнко. "Технологічна цінність промислових хімічних добавок при їх використанні у виробництві будівельної кераміки." Thesis, Одеський національний політехнічний університет, 2013. http://repository.kpi.kharkov.ua/handle/KhPI-Press/31485.

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Досліджено технологічну ефективність комплексної поверхнево-активної добавки "MasterКерам" при її використанні у виробництві стінової кераміки для покращення властивостей керамічних мас і матеріалів. Встановлено водоредуційний ефект добавки та її позитивний вплив на міцність коагуляційної та конденсаційної структури мас. Визначена оптимальна кількість добавки, рекомендована для використання у виробництві стінової кераміки рядового призначення.
The technological efficiency of complex surface-active additive "MasterCeram" using to improve the properties of ceramic masses and materials in the manufacture of wall ceramics is investigated. The water-reducing effect of the additive and its positive influence on the strength of the coagulation and condensation structure of ceramic masses are established. The optimal amount of additive, which recommended for use in the manufacture of terraced wall ceramic, are established.
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Yang, Nana. "Structural strength and reliability analysis of composite structures." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=13242.

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Cofer, William Franklin. "An analytical determination of ultimate strength of tubular joints for offshore structures." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/21494.

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Rouaiguia, Ammar. "Strength of soil-structure interfaces." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/26883.

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This research work deals with the development of the shearbox apparatus by introducing a micro-computer to automatically collect all the results, and to apply normal and shear stresses. A continuous statement of time, channel number, and transducer input and output is produced for each test, the sequences of applied rates of displacement and normal stresses for which were programmed.
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Prandato, Emeline. "Relations structure-propriétés et résistance à l’endommagement de vernis acrylate photo-polymérisables pour substrats thermoplastiques : évaluation de monomères bio-sourcés et de nano-charges." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0103/document.

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L’objectif de ces travaux a été de développer des vernis acrylate photo-polymérisables à 100% d’extrait sec, destinés à protéger des pièces thermoplastiques en polycarbonate contre les endommagements mécaniques, en particulier contre la rayure. Les relations entre la composition, la structure et les propriétés de ces revêtements ont été explorées. Pour ce faire ont été étudiées la morphologie, les propriétés thermomécaniques ainsi que la résistance à la rayure des matériaux. Cette dernière a été évaluée par des tests de micro-scratch. La cinétique de formation des réseaux polymères a elle aussi été étudiée, par photo-DSC. Tous les matériaux étudiés présentent, en analyse thermomécanique dynamique, un module élevé à l’état caoutchoutique ainsi qu’une large relaxation mécanique. Un vernis pétro-sourcé à 100% d’extrait sec, qualifié de standard, a servi de point de départ à ces travaux. Il a tout d’abord été comparé à un vernis commercial solvanté photo-polymérisable, spécialement conçu pour la protection de pièces thermoplastiques. Celui-ci s’est avéré être plus efficace en termes de résistance à la rayure. Dans un deuxième temps, a été étudiée l’influence sur les propriétés du vernis standard pétro-sourcé d’un monomère multicyclique entrant dans sa composition. La modification de son pourcentage n’a permis d’apporter aucun bénéfice en termes de résistance à la rayure. Des nanoparticules de silice, d’alumine ou de zircone, disponibles sous forme de dispersion dans un monomère acrylate, ont ensuite été incorporées dans le vernis standard pétro-sourcé. Une organisation particulière de la nano-silice et de la nano-alumine au sein des matériaux étudiés a pu être observée par microscopie électronique en transmission. Il a été constaté que le taux de charge doit être élevé pour observer une augmentation du module élastique et une amélioration de la résistance à la rayure du vernis (≥15% massique dans le cas de la nano-silice). Par ailleurs, l’ajout de 5% massique de nano-silice dans le vernis n’a conduit à aucune modification de sa cinétique de photo-polymérisation. Enfin, une partie des composés acrylate pétro-sourcés du vernis standard a été substituée par des acrylates bio-sourcés disponibles industriellement. La cinétique de photo-polymérisation des deux types de vernis est similaire. Les conclusions de la comparaison entre les vernis bio-sourcés et le vernis standard pétro-sourcé en termes de résistance à la rayure dépendent de l’épaisseur des revêtements étudiés. L’ajout d’un composé monoacrylate bio-sourcé à la formulation des vernis tend à améliorer la recouvrance élastique des revêtements de faible épaisseur. L’acrylate d’isobornyle est en particulier intéressant, car il a aussi tendance à retarder l’apparition des craquelures au cours de la rayure
The aim of this work was to develop 100% solids photo-polymerizable acrylate coatings, intended to protect thermoplastic pieces made of polycarbonate against mechanical damage, in particular scratches. The relationships between the composition, the structure and the properties of these coatings were examined. For this purpose the morphology, the thermomechanical properties and the scratch resistance of the materials, assessed by micro-scratch tests, were studied. The kinetics of the polymer network formation was also studied by photo-DSC experiments. All the materials feature a high elastic modulus and a broad mechanical relaxation in dynamic thermomechanical analysis. A 100% solids petro-based coating (standard) constituted the starting point of this work. First it was compared to a commercial photo-polymerizable coating containing solvents, specially designed to protect thermoplastic pieces. This commercial coating turned out to be more efficient against scratches. In a second time was studied the influence of the percentage of a multicyclic monomer, taking part in the composition of the standard petro-based coating, on the properties of the latter. The modification of its proportion does not bring any advantage concerning the scratch resistance. Silica, alumina and zirconia nanoparticles, dispersed in an acrylate monomer, were then incorporated in the standard petro-based coating. A particular organization of the silica or alumina nanoparticles in the materials could be observed by transmission electron microscopy. A high filler content is required to observe an increase in the elastic modulus and an enhancement of the scratch resistance of the coating (≥15% by weight for the nano-silica). Moreover, no change of the photo-polymerization kinetics was noticed through the addition of 5% by weight of nano-silica in the coating. Finally, some of the petro-based acrylate compounds of the standard coating were substituted by commercially available bio-based acrylate monomers. Both types of coatings feature similar polymerization kinetics. The conclusions concerning the comparison of the scratch resistance of the bio-based and standard petro-based coatings depend on their thickness. The incorporation of a bio-based monoacrylate compound in low thickness coatings tends to improve the elastic recovery. Isobornyl acrylate is particularly interesting since it also tends to delay the apparition of cracks along the scratch
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Moe, Heidi. "Strength analysis of net structures." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-5411.

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The main goal of this PhD project was to develop a method for non-linear strength analysis of net structures applied in the aquaculture and fishing industries, e.g. net cages and trawls. The work focused on the aquaculture net cage, which was applied in experiments and analyses, and included research to establish knowledge within material properties and failure modes of traditional netting materials for aquaculture. It was chosen to focus on tensile properties and to study elastic and plastic behaviour, fracture, creep behaviour and cod bite damage. The project consisted of three main activities: tensile testing of netting materials, studies and testing of cod bite damage and resistance, and structural analysis of aquaculture net cages. Net cages are built as a system of ropes and netting. They are designed to transfer and carry all major forces through the ropes. Loads from current, waves, weights and handling induce forces in the net cage, which must be dimensioned to withstand this. Analyzing an aquaculture net cage is both complex and time consuming due to non-linear effects, detailed geometry and dynamic loads. The behaviour of the net cage is dominated by very large deformations and displacements, and materials with non-linear properties. There is a need for verified analysis methods and specific guidance on how to reduce the complexity of a net cage analysis. In order to perform a strength analysis of a net cage, it is crucial to know the material properties of the netting material. Traditionally, the material property of major interest for the aquaculture industry has been the tensile breaking strength of netting (mesh) and ropes, and comparatively little focus has been on their detailed stiffness properties and general behaviour prior to fracture. A new test method was established to determine the uniaxial tensile properties of knotless netting materials. It was applied on a variety of netting materials and stress-strain relations were developed. Data on temporary creep properties, recovery of strain post creep and post creep tensile properties of a selection of Raschel knitted netting materials was presented. Post creep tensile testing showed that the length and force at break were not significantly affected by the creep load history. Cod farmers have reported that cod interact with the cage netting through biting and thereby create wear and tear. The nature of the cod bite attack on traditional, multifilament netting materials was described based on studies of cod interaction with traditional knotless netting and resulting fracture damage on netting fibres. Field experiments were performed, subjecting panels of netting to cod bite in commercial cod cages. In addition, a test method was developed to simulate damage on traditional netting from cod bite, and a prototype bite-jig was designed and assembled. It was concluded that netting materials for cod aquaculture must be resistant to cod bite or be repellent or uninteresting for cod. A method for numerical analysis of net cages in constant uniform current was developed and verified for limited solidity, deformations and current velocities. Various new designs for aquaculture net cages were presented and compared to a traditional net cage with regard to stresses in the netting material and deformation of the net cage.
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Hou, An. "Strength of composite lattice structures." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/12475.

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Moreland, Angela. "The structure and strength of metallurgical coke." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/13759.

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This study aimed to investigate the relationship between the tensile strength of metallurgical coke and both the textural composition of the carbon matrix and the porous structure of the coke, and further to assess the use of these structural features as bases of methods of coke strength prediction. The forty-four cokes examined were produced in a small pilot-oven from blended-coal charges based on six coals differing widely in rank. Their textural composition was assessed by incident polarized-light microscopy while pore structural parameters were measured by computerized image analysis allied to reflected light microscopy. The tensile strength of coke could be related to textural data with accuracy using several relationships, some of which were based on a model for the tensile failure of coke. Relationships between tensile strength and pore sturctural parameters were less successful, possibly because of difficulties associated with the measuring system used. Neverthless relationships involving combinations of pore structural and textural data were developed and investigated. It was shown that relationships between tensile strength and calculated textural data had promise as the basis of a method of coke strength prediction. Also, tensile strengths could be calculated from the blend composition and the tensile strength of the coke produced from component cokes. Both methods have value in different situations.
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Abbasi, Erfan. "Processing and structure of high strength steels." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/9466/.

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There is currently an extensive effort to develop new steels with a better combination of strength and ductility, the so-called Ultra-High Strength Steels (UHSS) and Advanced High Strength Steels (AHSS). The new steels must be able to be manufactured using existing plant and at the same time meet ever decreasing cost demands. This study looks at developing AHSS, with a focus primarily on the microalloying precipitation behaviour and microstructural evolution during thermomechanical processing of transformation induced plasticity (TRIP) assisted steels. This approach combines two mechanisms that are known to enhance properties, namely the TRIP effect and precipitation hardening arising from strain induced precipitation. In respect of the TRIP effect, a detailed investigation was undertaken to look at the effect of the intercritical anneal on strength and ductility. For the strain induced precipitation, the effect of combined microalloy additions was investigated. Initially, the effect of intercritical annealing was studied using a trial as-cold rolled multiphase V microalloyed TRIP assisted steel with a polygonal ferrite matrix (1.5Mn C+Si+Al+N≈1.0 (C 0.2) and V˂0.2 wt%) focusing on the isothermal bainite transformation at 460°C. The V(C,N) precipitates were extensively observed in all phases (ferrite, retained austenite, martensite and bainitic ferrite) after isothermal bainite transformation in a random manner. The tensile testing suggested considerable improvements in yield, ultimate tensile strengths and elongation after 180s isothermal bainite holding time. According to SEM/TEM observations, these effects were attributed to the evolution of retained austenite from block to film morphology, and possible interaction between microalloying precipitates and newly formed dislocations as a result of bainite transformation. The average density of V(C,N) slightly increased after intercritical annealing, though it did not show a significant variation during the isothermal bainite transformation. Nevertheless, the size distribution of V(C,N) precipitates did not change significantly. The effect of a combined addition of Nb, Mo and V was investigated in TRIP multiphase steel (0.12C 1.50Mn 1.50Si and NbVTiMo≤0.20 wt%), which was compared to a V single addition steel with otherwise matched composition. A comparative study was undertaken using intercritical annealing after ~20% cold-rolled deformation of the rough rolled specimens. The resulting microstructure in both alloys comprised acicular/bainitic ferrite with an uneven proportion of allotriomorphic ferrite and retained austenite and martensite. An average density of precipitates increased in both alloys after intercritical annealing, with an average of 137 and 219 precipitate/µm2 in NbVMo and V steels, respectively. NbV(C,N), NbVMo(C,N) and V(C,N) were observed in the NbVMo steel. In both alloys, precipitates with different morphologies were observed, located in the matrix, on dislocations and at grain boundaries. The results suggested that the NbMo addition retarded the growth/coarsening of precipitates with a size of lower than 15nm. Also, much greater precipitation strengthening was observed in the NbVMo steel after intercrital annealing compared to the V steel. The last part of the project was to systematically study the effect of Nb and Mo on the V steel as a function of thermomechanical processing. Laboratory simulations were developed by plane strain compression testing which accurately replicate the whole thermomechanical process route from the hot rolling through intercritical annealing, followed by the bainite transformation. After hot and controlled rolling at intercritical annealing range the resulting microstructure was acicular/bainitic ferrite, retained austenite and martensite surrounded by allotriomorphic ferrite in both alloys. The TEM observations suggested that a noticeable number of precipitates were formed in the NbVMo steel up to the finishing stage (i.e. average of 112 precipitate/µm2 in NbVMo containing steels). It was also found that the V(C,N) precipitation occurred in austenite and ferrite below the finishing stage (i.e. ≤830˚C) with an average cooling rate of ~12˚C/s. The overall findings suggest that the high dislocation density in the ~20% cold rolled acicular/bainitic ferrite could lead to an intense precipitation and coarsening of V(C,N) during the intercritical annealing.
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Robertson, I. "Strength loss in welded aluminium structures." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372908.

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Books on the topic "Structure strenght"

1

Clauss, Günther. Offshore Structures: Volume II Strength and Safety for Structural Design. London: Springer London, 1994.

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Polymer interfaces: Structure and strength. Munich: Hanser Publishers, 1994.

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1948-, Wiese Jim, White Steven, and Dawson Jim, eds. Structural strength and stability. Scarborough, Ont: Nelson Thomson Learning, 2000.

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Scaling of structural strength. New York: Taylor & Francis, 2002.

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Scaling of structural strength. 2nd ed. Oxford: Elsevier/Butterworth-Heinemann, 2005.

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Maddox, S. J. Fatigue strength of welded structures. 2nd ed. Cambridge, England: Abington Pub., 1991.

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John, Case. Strength of materials and structures. 4th ed. London: Arnold, 1999.

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Barbara, Taylor. Structures and materials. New York: F. Watts, 1991.

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Murray, Robert W. Phonological strength and early Germanic syllable structure. München: W. Fink, 1988.

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Determinate structures: Statics, strength, analysis, design. Albany: Delmar Publishers, 1996.

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Book chapters on the topic "Structure strenght"

1

Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Torsional Strength." In Design of Ship Hull Structures, 417–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_22.

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Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Strength Evaluation." In Design of Ship Hull Structures, 33–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_3.

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Giacomucci, Scott. "Experiential Sociometry Practice and Safety Structures with Groups." In Social Work, Sociometry, and Psychodrama, 215–36. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6342-7_11.

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AbstractThis chapter is devoted to the description and depiction of action sociometry processes and safety structures in group settings, especially in group therapy. Each of these is presented with considerations to theory, safety, and multiple examples of structured prompts for their application in diverse social work group settings. Experiential sociometry processes outlined include the use of small groups, spectrograms, locograms, floor checks, step-in sociometry, hand-on-shoulder soicograms, and the circle of strength safety structure. These action-based processes can be modified for use in any group setting to enliven the group experience.
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Xiao, Yan. "Design Strength of Glubam." In Engineered Bamboo Structures, 121–38. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003204497-4.

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Abdelal, Gasser F., Nader Abuelfoutouh, and Ahmed H. Gad. "Strength Analysis." In Finite Element Analysis for Satellite Structures, 83–201. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-4637-7_4.

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Reintjes, Christian, Jonas Reuter, Michael Hartisch, Ulf Lorenz, and Bernd Engel. "Towards CAD-Based Mathematical Optimization for Additive Manufacturing – Designing Forming Tools for Tool-Bound Bending." In Lecture Notes in Mechanical Engineering, 12–22. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77256-7_2.

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AbstractThe trend towards flexible, agile, and resource-efficient production systems requires a continuous development of processes as well as of tools in the area of forming technology. To create load-adjusted and weight-optimized tool structures, we present an overview of a new algorithm-driven design optimization workflow based on mixed-integer linear programming. Loads and boundary conditions for the mathematical optimization are taken from numerical simulations. They are transformed into time-independent point loads generating physical uncertainty in the parameters of the optimization model. CAD-based mathematical optimization is used for topology optimization and geometry generation of the truss-like structure. Finite element simulations are performed to validate the structural strength and to optimize the shape of lattice nodes to reduce mechanical stress peaks. Our algorithm-driven design optimization workflow takes full advantage of the geometrical freedom of additive manufacturing by considering geometry-based manufacturing constraints. Depending on the additive manufacturing process, we use lower and upper bounds on the diameter of the members of a truss and the associated yield strengths. An additively manufactured flexible blank holder demonstrates the algorithm-driven topology design optimization.
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Heim, Ruediger. "Influencing Factors for Fatigue Strength." In Structural Integrity, 67–107. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48173-5_3.

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Heim, Ruediger. "Fatigue Strength Under Spectrum Loading." In Structural Integrity, 109–45. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48173-5_4.

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Timco, G. W., and R. M. W. Frederking. "Seasonal Compressive Strength of Beaufort Sea Ice Sheets." In Ice-Structure Interaction, 267–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84100-2_14.

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Hermans, Ben. "The phonological structure of the Limburg tonal accents." In Strength Relations in Phonology, 317–72. Berlin, New York: Mouton de Gruyter, 2009. http://dx.doi.org/10.1515/9783110218596.2.317.

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Conference papers on the topic "Structure strenght"

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De Angelis, Maurizio, Salvatore Perno, Anna Reggio, Gerardo De Canio, and Nicola Ranieri. "Shaking Table Tests on a Passive Equipment Isolation System for Earthquake Protection." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77764.

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The present work refers to steel frame structures in industrial plants. A passive isolation system for seismic protection of a considerable equipment, already present on a frame support structure and rigidly constrained to it, is investigated through both numerical simulations (1+1 DOF system) and shaking table tests on a 1:5 scale two-story steel frame structure. The equipment (e.g. a pipeline, a compressor unit, ...) is modelled as a rigid mass. The optimal design is determined by minimizing the dynamic response of the isolated mass. In order to ensure strenght and serviceability, the response of the frame is also monitored.
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Verderaime, V., and R. Vaughan. "U-groove aluminum weld strength improvement." In 37th Structure, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-1576.

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KELLAS, SOTIRIS, and JOHN MORTON. "Strength scaling in fiber composites." In 32nd Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1144.

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MALAZNIK, SCOTT, and MICHELE ARMET. "Shear strength of structural adhesives." In 28th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-896.

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Hou, An, Kurt Gramoll, An Hou, and Kurt Gramoll. "Strength of composite latticed structures." In 38th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-1251.

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FISH, JOHN, and SUNG LEE. "Tensile strength of tapered composite structures." In 29th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-2252.

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Anderson, M., and M. Anderson. "Design of panels having postbuckling strength." In 38th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-1240.

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CHANG, K., J. JENSEN, R. MATTHEWS, and A. PAREKH. "Buckling Strength of Carbon/Carbon Panels." In 31st Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-969.

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Pochiraju, Kishore, T. W. Chou, and Bharat Shah. "Modeling stiffness and strength of 3D textile structural composites." In 37th Structure, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-1579.

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BHATT, D., and R. LEDERICH. "Superplastic forming of high-strength aluminum alloys." In 26th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-748.

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Reports on the topic "Structure strenght"

1

Li, Xuejun, Timothy Whalen, and Mark Bowman. Fatigue Strength and Evaluation of Sign Structures, Volume 2: Sign Structure Inspection Manual. West Lafayette, IN: Purdue University, 2006. http://dx.doi.org/10.5703/1288284314224.

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Faber, Katherine T., and John P. Hirth. Strength and Structure of Gal-xInxAs Alloys. Fort Belvoir, VA: Defense Technical Information Center, January 1986. http://dx.doi.org/10.21236/ada172042.

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Howard, Isaac, Thomas Allard, Ashley Carey, Matthew Priddy, Alta Knizley, and Jameson Shannon. Development of CORPS-STIF 1.0 with application to ultra-high performance concrete (UHPC). Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40440.

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This report introduces the first release of CORPS-STIF (Concrete Observations Repository and Predictive Software – Structural and Thermodynamical Integrated Framework). CORPS-STIF is envisioned to be used as a tool to optimize material constituents and geometries of mass concrete placements specifically for ultra-high performance concretes (UHPCs). An observations repository (OR) containing results of 649 mechanical property tests and 10 thermodynamical tests were recorded to be used as inputs for current and future releases. A thermodynamical integrated framework (TIF) was developed where the heat transfer coefficient was a function of temperature and determined at each time step. A structural integrated framework (SIF) modeled strength development in cylinders that underwent isothermal curing. CORPS-STIF represents a step toward understanding and predicting strength gain of UHPC for full-scale structures and specifically in mass concrete.
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Ii, Shinichiro, Hajime Matsuura, Tatsumi Oonishi, and Masahiro Terada. Application Development of High-Strength Structural Adhesives. Warrendale, PA: SAE International, September 2005. http://dx.doi.org/10.4271/2005-08-0665.

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Tennery, V. (Tensile strength measurement techniques for structural ceramics). Office of Scientific and Technical Information (OSTI), June 1990. http://dx.doi.org/10.2172/6837433.

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Luzzi, David E. Interfacial Atomic Structure Segregation and Strength of Polysynthetically-Twinned TiAl. Fort Belvoir, VA: Defense Technical Information Center, April 2003. http://dx.doi.org/10.21236/ada415245.

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Atwood, Clinton J., Thomas Eugene Voth, David G. Taggart, David Dennis Gill, Joshua H. Robbins, and Peter Dewhurst. Titanium cholla : lightweight, high-strength structures for aerospace applications. Office of Scientific and Technical Information (OSTI), October 2007. http://dx.doi.org/10.2172/922082.

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Al-Chaar, Ghassan. Evaluating Strength and Stiffness of Unreinforced Masonry Infill Structures. Fort Belvoir, VA: Defense Technical Information Center, January 2002. http://dx.doi.org/10.21236/ada407072.

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Kihl, David P. Fatigue Strength and Behavior of Ship Structural Details. Fort Belvoir, VA: Defense Technical Information Center, April 1999. http://dx.doi.org/10.21236/ada370227.

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Rao, M. P., J. Roedel, and F. F. Lange. Reliable Ceramic Structural Composites Designed with Threshold Strength. Fort Belvoir, VA: Defense Technical Information Center, April 2001. http://dx.doi.org/10.21236/ada389519.

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