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Добірка наукової літератури з теми "Structural Joints Testing"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Structural Joints Testing"

Sadowski, T., T. Balawender, R. Sliwa, P. Golewski, and M. Knec. "Modern Hybrid Joints in Aerospace: Modelling and Testing / Nowoczesne Połaczenia Hybrydowe W Lotnictwie: Modelowanie I Badania Eskperymentalne." Archives of Metallurgy and Materials 58, no. 1 (March 1, 2013): 163–69. http://dx.doi.org/10.2478/v10172-012-0168-3.

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The aim of the paper is to review different types of modern hybrid joints applied in aerospace. We focused on three particular cases: 1) spot welding - adhesive, 2) rivet-bonded and 3) clinch-bonded joints. The numerical models presented in the paper for these joints describe their complex behaviour under mechanical loading. The numerical calculations performed using ABAQUS code were compared to experimental results obtained by application of the Digital Image Correlation system (DIC) ARAMIS. The results investigated within the paper lead to the following major conclusions: - the strengthening of joints by application of adhesive significantly improve static strength, - the final failure of the joined structural system significantly depends on the surface adhesive area, - the stiffening effects of the hybrid joint lead to higher reliability and durability of the structural joints.

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Milčić, Dragan, Dragan Mitić, Nenad Radović, Miodrag Milčić, and Aleksija Đurić. "Characterization of welded joints with Partial penetration on S355N structural steel." Zavarivanje i zavarene konstrukcije 66, no. 4 (2021): 149–59. http://dx.doi.org/10.5937/zzk2104149m.

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Existing standards require welded joints with full penetration. It is considered that welded joints with complete penetration minimize the stress concentration in the root passage. However, there are numerous situations in the industry, in which the load-bearing capacity of the welded joint with partial penetration is satisfactory. If the tests of partially penetrated welds show satisfactory load capacity, the benefits compared to fully penetrated welds are reflected in lower costs, ie less time is required to prepare the joint, less additional material is needed, ie shorter time is required to make the welded joint. The paper presents the testing of butt welded joints of structural steel S355N, with partial penetration, achieved by the MAG welding in the overhead position (PD) in the protection of the gas mixture. The samples were welded with different welding parameters and with different joint preparation, and the tests were performed by non destructive methods (visual inspection, testing with penetrants and magnetic particles) and destructive methods - tension and bending tests, Vickers hardness testing.

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Jasiński, Radosław, and Iwona Galman. "Testing Joints between Walls Made of AAC Masonry Units." Buildings 10, no. 4 (April 2, 2020): 69. http://dx.doi.org/10.3390/buildings10040069.

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Joints between walls are very important for structural analysis of each masonry building at the global and local level. This issue has often been neglected in the case of traditional joints and relatively squat walls. At present, the issue of wall joints is becoming particularly important due to the continuous drive for simplifying structures, introducing new technologies and materials. Eurocode 6 and other standards (American, Canadian, Chinese, and Japanese) recommend inspecting joints between walls, but no detailed procedures have been specified. This paper presents our own tests on joints between walls made of autoclaved aerated concrete (AAC) masonry units. Tests included reference models composed of two wall panels joined perpendicularly with a standard masonry bond (six models), with classic steel and modified connectors (twelve models). The shape and size of test models and the structure of a test stand were determined on the basis of the analysis of the current knowledge, pilot studies and numerical FEM (Finite Element Method) - based analyses. The analyses referred to the morphology and failure mechanism of models. Load-displacement relationships for different types of joints were compared and obtained results were related to results for reference models. The mechanisms of cracking and failure was found to vary, and clear differences in the behaviour and load capacity of each type of joint were observed. The individual working phases of joints were determined and defined, and an empirical approach was proposed for the determination of forces and displacement of wall joints.

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Adamus, K., and P. Lacki. "Assessment of Aluminum FSW Joints Using Ultrasonic Testing." Archives of Metallurgy and Materials 62, no. 4 (December 1, 2017): 2399–404. http://dx.doi.org/10.1515/amm-2017-0353.

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AbstractThe paper concerns aluminum joints made using friction stir welding. Although in the aerospace industry there is a tendency to replace metal components with composites, aluminum continues to be a valuable material. Its share in the aircraft structures is the biggest among all structural metals. Lots of aluminum components are made of sheets and most of them require joining. Friction stir welding is a relatively new joining technology, particularly with regard to the sheets having a thickness of 1 mm or lower. The paper is dedicated to non-destructive testing of such joints using ultrasonic inspection. It was found that ultrasonic testing allows for distinguishing between joints without material discontinuities, joint with material discontinuities at the advancing side and joint with discontinuities extending through the whole width of the stir zone. During research only horizontally aligned defects were taken into account.

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Alqaryouti, Yousef, Dilum Fernando, and Joseph Gattas. "Structural Behavior of Digitally Fabricated Thin-Walled Timber Columns." International Journal of Structural Stability and Dynamics 19, no. 10 (October 2019): 1950126. http://dx.doi.org/10.1142/s0219455419501268.

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This paper aims to investigate the structural behavior of digitally fabricated thin-walled timber sections with edge connectivity provided by integral mechanical press-fit joints. Experimental, numerical, and analytical investigations have been developed to accurately characterize the press-fit section behavior and their failure modes. Plywood fiber orientation, material thickness, and connection tightness are considered as potential factors that may affect the performance of the press-fit jointing system. Experimental testing of square hollow sections (SHSs) under uniaxial compressive loading showed failure of sections through both conventional crushing and novel pop-off bifurcation failures. Pop-off buckling behaviors were shown to be governed by the integral joint transverse stiffness and its magnitude relative to a critical edge stiffness value. Columns with joint transverse stiffness value less than the critical edge stiffness value exhibited pop-off failures. These joint stiffness values were obtained from testing of unloaded joints and were used to obtain accurate predictions of column failure modes. Joint stiffness values for loaded joints were then predicted with an interpolation model mapping axial strain to a tighter connection tolerance and these were used to obtain accurate estimations for column failure load in most of the tested column types. Comparative investigations showed thin-walled sections with integral joints only to be capable of matching the compressive capacities of glued sections, for instances where crushing governed. Similarly, the weight-specific compressive capacity of timber sections was found to be comparable to thin-walled steel sections when crushing governs.

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Zhang, Dongfang, Junhai Zhao, and Shuanhai He. "Cyclic Testing of Concrete-Filled Double-Skin Steel Tubular Column to Steel Beam Joint with RC Slab." Advances in Civil Engineering 2018 (July 26, 2018): 1–15. http://dx.doi.org/10.1155/2018/7126393.

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The design of composite joints for connecting concrete-filled double-skin tubular (CFDST) columns to steel beams supporting reinforced concrete (RC) slabs is presented in this paper. Five half-scale specimens were designed, including four composite joints with RC slab and one bare steel beam joint, and were tested under a constant axially compressive force and lateral cyclic loading at the top end of the column to evaluate their seismic behavior. The main experimental parameters were the construction of the joint and the type of the column. The seismic behaviors, including the failure modes, hysteresis curves, ductility, strength and stiffness degradation, and energy dissipation, were investigated. The failure modes of the composite joints depended on the joint construction and on the stiffness ratio of beams to columns. Joints of stiffening type had significantly higher load-bearing and deformation capacities than joints of nonstiffening type. Compared with the bare steel beam joint, the bearing capacities of the composite joints with RC slabs were markedly increased. The composite action was remarkable under sagging moments, resulting in larger deformation on the bottom flanges of the beams. Overall, most specimens exhibited full hysteresis loops, and the equivalent viscous damping coefficients were 0.282∼0.311. The interstory drift ratios satisfied the requirements specified by technical regulations. Composite connections of this type exhibit excellent ductility and favorable energy dissipation and can be effectively utilized in superhigh-rise buildings erected in earthquake zones.

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Bu, Yonghong, Qi Yang, Yihong Wang, and Dongfang Zhang. "Cyclic Testing of Bolt-Weld Joints Reinforced by Sleeves Connecting Circular CFST Columns to Steel Beams." Advances in Civil Engineering 2020 (January 28, 2020): 1–12. http://dx.doi.org/10.1155/2020/9674128.

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This study examined the design of joints reinforced by sleeves for connecting circular concrete-filled steel tube columns to steel beams. Six half-scale specimens, including four bolt-weld joints reinforced by sleeves and two bolt and stiffened end-plate joints, were designed and tested under cyclic loading to evaluate the seismic behavior of these joints. The joint construction and beam-column stiffness ratio were taken as the main parameters in the tests. The seismic behaviors, including the failure modes, hysteretic curves, ductility, strength and stiffness degradation, and energy dissipation, were investigated. The experimental results showed that no obvious bolt loosening, fracture, or widespread weld cracking appeared in the joints reinforced by sleeves. Furthermore, the joint strength and stiffness were markedly increased by the sleeves in the joint core area. Overall, most specimens exhibited full hysteresis loops and excellent ductilities, the equivalent viscous damping coefficients were 0.263∼0.532, and the ductility coefficients were 1.77∼3.42. The interstory drift ratios satisfied the requirements specified by technical regulations. The connections of these types exhibit favorable energy dissipations and can be effectively utilized for building construction in earthquake-prone areas. This research should contribute to the future engineering applications of concrete-filled steel tube to composite structure.

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Ullah, Sami, Faiz Ahmad, and Anildav Singh. "Development and Testing of Intumescent Fire Retardant Coating on Various Structural Geometries." Applied Mechanics and Materials 699 (November 2014): 360–65. http://dx.doi.org/10.4028/www.scientific.net/amm.699.360.

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Materials are prone to fire and in modern construction their protection from fire is required. In any structure, various joints such as T-joint, I-beam and elbows are used. The geometry of the component has significant role in protection of structure. A weak joint may lead to failure of main structure. In order to meet these challenges, Intumescent fire retardant coating (IFRC) were developed and tested on various structural geometries such as T-joints, elbows, I-beams and pipe. The control coating formulation (IFC-C) was developed from main ingredients; Ammonium Polyphosphate (APP), expandable Graphite (EG), Melamine (Mel), Boric Acid (BA) mixed with bisphenol A epoxy resin and polyamide hardener. Another set of formulations containing various percentage of aluminium Tri-Hydrate (ATH). Fire test results of ATH based formulation showed that I-beam geometry showed the high expansion of 19 mm. T-joint showed the average surface temperature of 55°C after one hour of Bunsen burner test. The X-ray Diffraction (XRD) showed the presence of boron oxide, boron phosphate, sassolite and aluminium oxide in IFC-ATH5 residual char. The 5wt% ATH filler in IFC-C enhanced the fire protection performance of intumescent fire retardant coating formulation.

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Mironovs, Viktors, Vjaceslavs Zemcenkovs, Dmitrijs Serdjuks, Vjaceslavs Lapkovskis, Aleksejs Tatarinovs, and Viktors Kurtenoks. "Method and apparatus for dynamic testing of structural joints." Journal of Physics: Conference Series 2423, no. 1 (January 1, 2023): 012017. http://dx.doi.org/10.1088/1742-6596/2423/1/012017.

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Abstract The dynamic testing technique is used during the design phase of structures and series production. This test evaluates the structural capacity, especially of the assemblies, to withstand different forces and rates of impact encountered under realistic operational conditions. This study proposes a magnetic pulse exciter for high-speed impact loading in dynamic tests because of its capability to provide single and repeatable pulse loading over a wide range of force up to 20 kN and pulse durations from 10 up to 1000 ms. The method transforms accumulated electrical energy in a capacitor bank into mechanical energy. For experimental investigations, flat and cylindrical coil devices were used for a capacitor-type pulse current generator. The proposed method has been experimentally validated on timber beams in a specified volume of force loading. The technique demonstrated a potential for controlling force and energy parameters. The effects of operating voltage on coil and ‘metal plate - coil’ distance on the amplitude of dynamic loading have been investigated. Aluminium and steel plates fastened to the object at the point of impact were used to improve excitation efficiency. The developed technique can be used in experimental studies on model joints and real objects.

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Morelli, Piero. "An Experimental Study on the Shear Strength of Steel Structures Joints." Applied Mechanics and Materials 268-270 (December 2012): 279–82. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.279.

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The results of an experimental investigation on the shear strength of structural joints are presented and discussed. Joint typologies generally employed in structural frames of industrial warehouses and intermediate floors are taken into consideration. Specimens were supplied by an industrial shelving manufacturer, in two different configurations: the first one characterized by steel pressed geometrical connectors and the second one consisting in bolted fittings to angular welded supporting plates. A specific testing device has been designed in order to transfer axial loading into shear loading applied to a couple of joints in a symmetrical testing configuration. Quasi-static loads were applied with increasingly intensity steps, until the yielding of the material or the overall structure collapse were reached. Failure modes of the tested joints are analyzed and discussed.

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Дисертації з теми "Structural Joints Testing"

Shrestha, Alina. "Fatigue Testing and Data Analysis of Welded Steel Cruciform Joints." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1670.

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In this study, ABS Publication 115, “Guidance on Fatigue Assessment of Offshore Structures” is briefly reviewed. Emphasis is on the S-N curves based fatigue assessment approach of non-tubular joints, and both size and environment effects are also considered. Further, fatigue tests are performed to study the fatigue strength of load-carrying and non-load-carrying steel cruciform joints that represent typical joint types in marine structures. The experimental results are then compared against ABS fatigue assessment methods, based on nominal stress approach, which demonstrates a need for better fatigue evaluation parameter. A good fatigue parameter by definition should be consistent and should correlate the S-N data well. The equivalent structural stress parameter is introduced to investigate the fatigue behavior of welded joints using the traction based structural stress approach on finite element models of specimens, and representing the data as a single Master S-N curve.

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Kabche, Jean Paul. "Structural Testing and Analysis of Hybrrid Composite/Metal Joints for High-Speed Marine Structures." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/kabchejp2006.pdf.

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Kahle, Matthew Gilbert. "Partially restrained composite connections : design and analysis of a prototype structure." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/20830.

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Pérez, Galmés Magdalena. "Analysis and development of experimental characterization methodologies of mode II fracture toughness on CFRP bonded joints." Doctoral thesis, Universitat de Girona, 2018. http://hdl.handle.net/10803/664508.

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Adhesives have been shown to be an excellent solution for joining fibre reinforced polymer (FRP) components thanks to their capacity to redistribute loads, reduces stress concentrations and contribute to overall weight saving in the structure. The most relevant mechanical property in adhesive bonded joints design is the shear (mode II) fracture toughness of the adhesive. The application of the existing mode II delamination standards to adhesive joints entails some major limitations that result in severe under/over estimations of the adhesive properties and, in many cases, can even prevent results from being obtained from tests. The main objective of the present thesis is to develop robust tools for the determination of shear (mode II) facture toughness in adhesive joints. This includes studying data reduction methods as well as the test geometries
Els adhesius han demostrat ser una magnífica solució per unir components de polímers reforçats amb fibres (FRP) gràcies a la seva capacitat per redistribuir càrregues, reduir les concentracions de tensions i contribuir a l’estalvi general de pes en l’estructura. La propietat mecànica més rellevant en el disseny d’unions adhesives és la tenacitat a la fractura a tallant (mode II) de l’adhesiu. L’aplicació dels actuals assajos estandaritzats a les unions adhesives pot derivar en estimacions errònies, per sota o per sobre, de les propietats adhesives i, en molts casos, evitar que l’assaig es pugui realitzar satisfactòriament. L’objectiu principal d’aquesta tesi és el desenvolupament d’eines robustes per a la determinació de la tenacitat a la fractura a tallant (mode II) d’unions adhesives. S’estudia l’aplicabilitat dels mètodes d’assaig de deslaminació en mode II existents a les unions adhesives estructurals. Això inclou l’estudi dels mètodes de reducció de dades i de les geometries d’assaig

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Derrick, Nathan Lynn. "Shear and Bending Strength of Cold-Formed Steel Solid Wall Panels Using Corrugated Steel Sheets for Mobile Shelters." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062814/.

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The objective of this thesis is to determine if the single sided resistance spot weld (RSW) can be used as a feasible connection method for cold formed steel (CFS) shear walls subject to lateral force of either seismic or wind loads on mobile shelters. The research consisted of three phases which include: a design as a 3D BIM model, connection tests of the resistance spot weld, and full-scale testing of the designed solid wall panels. The shear wall testing was conducted on specimens with both resistance spot weld and self-drilling screws and the results from tests gave a direct comparison of these connections when the solid wall panel was subjected to in-plane shear forces. The full-scale tests also included 4-point bending tests which was designed to investigate the wall panel's resistance to the lateral loads applied perpendicularly to the surface. The research discovered that the singled sided resistance spot weld achieved similar performance as the self-drilling screws in the applications of CFS wall panels for mobile shelters. The proposed single sided resistance spot weld has advantages of low cost, no added weight, fast fabrication, and it is a feasible connection method for CFS wall panels.

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Schrauben, Corey S. "Behavior of full-scale bolted beam-to-column T-stub and clip angle connections under cyclic loading." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20013.

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Smallidge, Jeffrey M. "Behavior of bolted beam-to-column T-stub connections under cyclic loading." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19534.

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Nguyen, N. T. "Advanced modelling of the fatigue of butt-welded structures : a thesis /." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phn576.pdf.

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Weise, Victoria Louise. "Ultrasonic techniques for adhesive bond examination of production automotive structures." Thesis, Keele University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263198.

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Feng, Ran, and 馮然. "Design of cold-formed stainless steel tubular joints." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290628.

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Книги з теми "Structural Joints Testing"

Institution, British Standards. Structural fixings in concrete and masonry. London: B.S.I., 1993.

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Institution, British Standards. British Standard methods of test for structural fixings in concrete and masonry. London: B.S.I., 1986.

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D, Harrison J., Pisarski H. G, and Great Britain. Department of Energy., eds. Background to newguidance on structural steel and steel construction standards in offshore structures: Report for the Department of Energy. London: H.M.S.O., 1986.

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Cook, Ronald A. Adhesive anchors in concrete under sustained loading conditions. Washington, D.C: Transportation Research Board, 2009.

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Restrepo, J. I. Seismic behaviour of connections between precast concrete elements. Christchurch, N.Z: University of Canterbury, Dept. of Civil Engineering, 1993.

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Pressure Vessels and Piping Conference (2010 Bellevue, Wash.). Proceedings of the ASME Pressure Vessels and Piping Conference--2010: Presented at ASME 2010 Pressure Vessels and Piping Conference/K-PVP Conference, July 18-22, 2010, Bellevue, Washington, USA. New York: American Society of Mechanical Engineers, 2010.

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Committee, SAC Joint Venture Guidelines Development. Interim guidelines advisory no. 1, supplement to FEMA-267 interim guidelines: Evaluation, repair, modification and design of welded steel moment frames. [Washington, D.C.]: Federal Emergency Management Agency, 1997.

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Venture, SAC Joint. Interim guidelines: Evaluation, repair, modification and design of welded steel moment frames. Sacramento, Calif: SAC Joint Venture, 1995.

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Czech Republic) Pressure Vessels and Piping Conference (2009 Prague. Proceedings of the ASME Pressure Vessels and Piping Conference--2009: Presented at 2009 ASME Pressure Vessels and Piping Conference, July 26-30, 2009, Prague, Czech Republic. New York, N.Y: American Society of Mechanical Engineers, 2010.

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Md.) Pressure Vessels and Piping Conference (2011 Baltimore. Proceedings of the ASME Pressure Vessels and Piping Conference--2011: Presented at ASME 2011 Pressure Vessels and Piping Conference, July 17-21, 2011, Baltimore, Maryland, USA. New York, N.Y: American Society of Mechanical Engineers, 2012.

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Частини книг з теми "Structural Joints Testing"

Portelli, Gene B. "Testing, Analysis, and Design of Structural Adhesive Joints." In Structural Adhesives, 407–49. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-7781-8_10.

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Gleich, D. M., M. J. L. Van Tooren, and A. Beukers. "Structural bonded joint analysis: An overview." In Adhesive Joints: Formation, Characteristics and Testing, 159–99. London: CRC Press, 2023. http://dx.doi.org/10.1201/9780429070709-12.

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Parvatareddy, Hari, Shuangyang Xu, and David Dillard. "Durability of structural adhesives and their bonded joints for high speed aerospace applications." In Adhesive Joints: Formation, Characteristics and Testing, 329–36. London: CRC Press, 2023. http://dx.doi.org/10.1201/9780429070709-20.

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Seemann, Ralf. "Mechanical characterization on structural element level." In A Virtual Testing Approach for Honeycomb Sandwich Panel Joints in Aircraft Interior, 73–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-60276-8_5.

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Kozlowski, A., P. Kawecki, D. Kukla, and K. Ostrowski. "Testing, modelling and design of bolted joints – effect of size, structural properties, integrity and robustness." In Modern Trends in Research on Steel, Aluminium and Composite Structures, 36–52. London: Routledge, 2021. http://dx.doi.org/10.1201/9781003132134-4.

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Leite Cavalcanti, Welchy, Elli Moutsompegka, Konstantinos Tserpes, Paweł H. Malinowski, Wiesław M. Ostachowicz, Romain Ecault, Neele Grundmann, et al. "Integrating Extended Non-destructive Testing in the Life Cycle Management of Bonded Products—Some Perspectives." In Adhesive Bonding of Aircraft Composite Structures, 331–50. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-92810-4_6.

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AbstractIn this chapter, we outline some perspectives on embracing the datasets gathered using Extended Non-destructive Testing (ENDT) during manufacturing or repair process steps within the life cycle of bonded products. Ensuring that the ENDT data and metadata are FAIR, i.e. findable, accessible, interoperable and re-usable, will support the relevant stakeholders in exploiting the contained material-related information far beyond a stop/go decision, while a shorter time-to-information will facilitate a prompter time-to-decision in process and product management. Exploiting the value of ENDT (meta)data will contribute to increased performance by integrating all defined, measured, analyzed and controlled aspects of material transformation across process and company boundaries. This will facilitate the optimization of manufacturing and repair operations, boosting their energy efficiency and productivity. In this regard, some aspects that are currently driving activities in the field of pre-process, in-process and post-process quality assessment will be addressed in the following. Furthermore, some requirements will be contemplated for harmonized and conjoint data transfer ranging from a bonded product’s beginning-of-life through its end-of-life, the customization of stand-alone or linked ENDT tools, and the implementation of sensor arrays and networks in joints, devices and structural parts to gather material-related data during a product’s middle-of-life application phase, thereby fostering structural health monitoring (SHM).

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Noeske, Michael, Welchy Leite Cavalcanti, Hauke Brüning, Bernd Mayer, Antonios Stamopoulos, Apostolos Chamos, Thomas Krousarlis, et al. "Introduction to Recent Advances in Quality Assessment for Adhesive Bonding Technology." In Adhesive Bonding of Aircraft Composite Structures, 1–50. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-92810-4_1.

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AbstractThe first chapter highlights the relevance of both adhesive bonding technology and in-process quality assessment for mastering twenty-first-century challenges in joining functional and lightweight materials like carbon fibre reinforced polymers. The ongoing developments of the relevant technological and regulatory procedures and frameworks are hereby outlined, following trends for data-driven innovation and standardisation. Advances from monitoring process variables towards the in-depth and objective Extended Non-destructive Testing (ENDT) of material-related features are presented, based on methodological and technological innovation and insights from recent European joint research projects like Horizon 2020s ComBoNDT—“Quality assurance concepts for adhesive bonding of aircraft composite structures by advanced NDT”. Introducing ten heuristic principles for quality assessment in bonding processes, a concept is demonstrated for establishing empirically consolidated sets of quantitative material and process-specific correlations between design-relevant joint features and quality data measured during the manufacture or repair of adhesive joints using ENDT. Each correlation is obtained by systematically introducing disturbances of relevant process features identified by experts and is levelled once by linking findings from standardised mechanical tests with ENDT results obtained for joints that have intentionally been manufactured or repaired in an off-specification way. Subsequent chapters will demonstrate the suitability of the broadly applicable process.

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Creton, Costantino. "Fracture of polymer interfaces: Interfacial structure and crack tip plasticity." In Adhesive Joints: Formation, Characteristics and Testing, 49–60. London: CRC Press, 2023. http://dx.doi.org/10.1201/9780429070709-3.

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Curtis, A. R., and P. D. Ainsworth. "The Mechanical Testing and Computer Modelling of Composite Bonded Joints." In Composite Structures 3, 562–74. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4952-2_39.

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Walker, James, and Robert Xiao. "Experimental Testing of a Portal Frame Connection Using Glued-In Steel Rods." In Materials and Joints in Timber Structures, 555–66. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-7811-5_51.

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Тези доповідей конференцій з теми "Structural Joints Testing"

Boucher, Robert. "Microgravity vibration output testing of Space Station rotary joints." In 41st Structures, Structural Dynamics, and Materials Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-1733.

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Moshier, Monty, Ronald Hinrichsen, Gregory Czarnecki, and Nathan Cook. "Testing Composite Joints Under High Energy Hydrodynamic Ram Conditions." In 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-1918.

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Johnson, Nancy L., and George A. Kardomateas. "Structural Adhesive Joints for Application to a Composite Space Frame - Analysis and Testing." In International Conference on Vehicle Structural Mechanics. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1988. http://dx.doi.org/10.4271/880892.

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Lovejoy, Andrew E., and Frank A. Leone. "Tension and Bending Testing of an Integral T-cap for Stitched Composite Airframe Joints." In 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-2180.

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Palwankar, Manasi P., Alexandru P. Popescu, and Satchi Venkataraman. "Finite Element Analysis and Testing of Countersunk Composite Bolted Joints in Double Lap Shear." In 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-1505.

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Grimes, Glenn C. "Building Block Approach for Composite Aircraft Structure Prototypes: Allowables and Building Block Testing for DOD/NASA Vehicles." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0387.

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Abstract Composite material allowables development required for prototype aircraft is discussed along with the related building block test effort necessary for such structure development. Allowables requirements are included as part of building block structural test requirements that are related to aircraft structure part criticality classifications. Then, each part of the building block is related to the test/evaluation/analysis categories that need to be interrogated to study the risk involved. For allowables, the categories are preliminary and “design-to” values related to physical defect minimum requirements in each classification. For the building block structures development test effort categories, the procedure used is progressive scale up of the size and complexity of the test program parts: from single to multiple load paths to joints and shapes. In summary, the relationship of the quality assurance requirements to those required for design allowables for flat panels to those required for intermediate structural components to those required for full size structure are discussed. Quality assurance requirement categories are discussed for each structural classification, size, and complexity of parts to be built. The building block structures test development effort satisfies the goals of: 1. Preliminary and “design-to” material allowables development, 2. Appropriate conceptual structural development, 3. Structural proof of concept and related analytical methods development, 4. Structural verification testing for analytical methods correlation, and 5. Structural integrity testing and FEM validations. Once these goals are achieved the user has acceptable risk and cost effective prototype composite aircraft structure that has the necessary integrity and reliability needed for the specific prototype aircraft being developed.

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HONGXIAO, WANG, WANG CHUNSHENG, HE GUANGZHONG, GAO WENWEN, LIU LIGUO, and JIANG WEI. "STUDY ON QUALITY AND PERFORMANCE EVALUATION TECHNOLOGY OF SPOT WELDING JOINT BASED ON ULTRASONIC NONDESTRUCTIVE TESTING." In 3rd International Workshop on Structural Health Monitoring for Railway System (IWSHM-RS 2021). Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/iwshm-rs2021/36010.

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As an important link to ensure the welding quality, the post-welding inspection of resistance spot welding joints has been paid much attention in the welding production of stainless steel metro vehicle body. At present, ultrasonic testing technology for spot welding joint quality is mostly qualitative testing, which cannot determine the quality information such as the geometric state of nugget and the size of internal defects. Therefore, the research on ultrasonic propagation characteristics and sound field distribution in resistance spot welding joints is carried out, and the visual image of internal connection state of spot welding joints is the key to realize quantitative nondestructive testing and quality evaluation of spot welding joints, which has important theoretical significance and practical value, and has broad application prospects in technical fields such as automobiles, rail passenger cars, aerospace and machinery.

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Shkolnikov, Vladimir M., Gabriel J. Hostetter, David K. McNamara, Joseph R. Pickens, Stanley P. Turcheck, and Bruce G. I. Dance. "Advanced Hybrid Joining Technology." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79769.

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The paper summarizes results of an engineering investigation on advanced joining technology for hybrid (composite-metal) structures. Polymer Matrix Composites (PMC) used in structural applications are known to reduce structure weight, lower life-cycle cost and, in case of a floating platform, improve the deadweight/displacement ratio. While beneficial, PMC applications for large hull structures have certain limitations in size and volume of seamless structural component without using joints. A hybrid hull that consists of both metal and composite structural members potentially enables desirable enhancements of structural efficiency, but robust joining between those heterogeneous structures must be employed. A recently completed feasibility study has been performed involving a novel hybrid joining concept-technology based on a combination of conventional adhesive bonding with novel metal surface preparation. Computer simulation of the joint structural behavior and failure, development of a material processing procedure based on adaptation of Vacuum-Assisted Resin Transfer Molding (VARTM) process to manufacturing of a large hybrid structure, fabrication of pilot joint test articles, and tensile testing of those to failure, have been performed as part of the feasibility study. Two sets of the hybrid joint were tested, the novel joint being developed and its conventionally bonded analogue without the novel surface preparation considered as a base-line joint. The tests resulted with 48%-increase of load-bearing capability of the novel joint and a good match between generated computed and experimental data.

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Subramanian, S., F. Kustas, S. Rawal, and E. Shinn. "Fabrication, testing and analysis of carbon-carbon/aluminum bonded joints with high thermal conductivity." In 39th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1998. http://dx.doi.org/10.2514/6.1998-1996.

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Tan, Kang Hai, and Kang Chen. "An experimental study of composite effect on the behaviour of beam-column joints subjected to impact load." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.6952.

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This paper presents an experimental study on structural behaviour of composite beam-column joints under a middle column removal scenario. Specimens were subjected to impact loads from an MTS drop-weight testing machine. Two joints with welded unreinforced beam flange and bolted web connections were designed per AISC 360-10. One of the beam-column joints had a thicker composite slab. The joints were restrained by pinned supports at two beam ends, which were connected to rigid A-frames to represent boundary conditions from adjacent structures. Test results indicated that the composite slab significantly affected the impact force due to an increase of inertia. However, other structural responses (especially displacement of the middle column) decreased due to increase of stiffness contributed by the thicker composite slab. The finding was that increasing thickness of composite slab can increase the resistance of composite joint significantly due to increased composite effect. More experimental studies were conducted to investigate other types of joints.

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Звіти організацій з теми "Structural Joints Testing"

Robinson, Jason. Structural Testing and Analysis of a Joined Wing Technology Demonstrator. Fort Belvoir, VA: Defense Technical Information Center, April 2004. http://dx.doi.org/10.21236/ada425641.

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EXPERIMENTAL STUDY ON TRUSS TYPE STEEL REINFORCED CONCRETE JOINTS. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.165.

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"This paper presents an experimental study on the structural behavior of two truss type steel reinforced concrete (SRC) joints. The objective is to characterize the mechanical behavior of SRC joints subjected to static loading. The specimens were scaled from a concrete core tube connected to a mega steel truss. Mechanical behavior of the joint zone is extremely complicated due to the complex geometry and interactive forces among the connected members. Monotonic loading tests were carried out through a self-balanced loading system. Sparse cracks were observed under design loads. Spalling concrete cover was observed for joint B1. Whereas, only a few cracks were observed in the joint D1 after testing. Based on the measured equivalent strains, the interaction zone of steel sections works elastically under 1.5 times of the design loads. This indicates that the joints have sufficient strength to meet the design requirements. The experimental results presented in this paper provides a better understanding of current truss type composite joints and offers ideas for further research based on the authors' findings."

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TESTING OF ADDITIVELY MANUFACTURED STAINLESS STEEL MATERIAL AND CROSS-SECTIONS. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.175.

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Powder bed fusion (PBF) additive manufacturing has the potential for significant impact on the construction industry due to its ability to produce complex and free-form components with high-precision. However, the size of components is limited by the build envelope of PBF machines. Laser welding offers a means of joining small individual PBF parts together to create larger-scale parts. This paper investigates the microstructure and material properties of stainless steel coupons with and without laser-welded joints, in conjunction with the structural performance of stainless steel circular hollow sections (CHS) at the cross-sectional level, with all specimens printed by PBF. The PBF base material exhibited a typical cellular microstructure, while the weld material consisted of equiaxed, columnar and cellular dendrite microstructures. The proof strengths of the weld were lower than those of the base metal, and the strengths of the PBF base metal were dependent on the build direction – the vertically built coupons showed lower proof strengths than the horizontal coupons. The axial resistances of the PBF CHS are safely predicted by the EN 1993-1-4 design provisions and the deformation-based continuous strength method (CSM).

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