Relevant bibliographies by topics / Impact damage

Academic literature on the topic 'Impact damage'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Impact damage"

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Schimmer, Florian, Sven Ladewig, Nicole Motsch, Joachim M. Hausmann, and Ingo Ehrlich. "Comparison of Low-Velocity Impact Damage Behavior of Unidirectional Carbon Fiber-Reinforced Thermoset and Thermoplastic Composites." Key Engineering Materials 809 (June 2019): 9–14. http://dx.doi.org/10.4028/www.scientific.net/kem.809.9.

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This paper investigates the damage behavior of thermoset and thermoplastic fiber-reinforced composites. The specimens were subjected to low-velocity impacts (LVI) to produce barely visible impact damages (BVID). To compare the dependency of the matrix system and the laminate lay-up on the impact damage, four test series were set up. Therefore, laminates with an epoxy (EP) and a polyether ether ketone (PEEK) matrix in a quasi-isotropic (QI) [+45/0/-45/90]2s and an orthotropic (OT) fiber lay-up [0/90]4s were manufactured. To eliminate the influence of variant fiber systems, the thermoplastic tape and the thermoset prepreg contain similar carbon fibers (CF). After impact testing with three different impact energies, inner damages were investigated by using ultrasonic analyses. To get a deeper understanding of the interior damage mechanisms, cross sections of the damaged areas were examined via reflected light microscopy. By using these destructive and non-destructive test methods, significant differences in the damage behavior of composites with thermoplastic and thermoset matrix systems were identified for both laminate lay-ups.
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Henkel, Ralf R., and Daniel R. Franken. "Sperm DNA Fragmentation: Origin and Impact on Human Reproduction." Journal of Reproductive and Stem Cell Biotechnology 2, no. 2 (December 2011): 88–108. http://dx.doi.org/10.1177/205891581100200204.

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Sperm DNA can be damaged due to a multitude of different noxae, which include disease, and occupational and environmental factors. Depending on the magnitude of the damage, such lesions may be repaired by the oocyte or the embryo. If this is not possible, a permanent damage can be manifested leading to mutations of the male genome. In cases where the oocyte or the embryo does not counter these damages to the male genome in terms of repair or an early abortion, sperm DNA damage and fragmentation can be a cause of numerous diseases including childhood cancer.
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Miśkiewicz, Mikołaj, Dawid Bruski, Jacek Chróścielewski, and Krzysztof Wilde. "Improvement of the load capacity of the road overpass as a result of repairs after breakage caused by vehicle impacts." MATEC Web of Conferences 284 (2019): 01004. http://dx.doi.org/10.1051/matecconf/201928401004.

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Damages of spans of the overpass caused by impact of underpassing vehicles are relatively frequent. Objects that use prefabricated load-bearing elements that are not designed for such impacts are particularly exposed. After impact, such structural elements suffer extensive damage that must be repaired. Taking advantages of this recovery actions it is worth to perform strengthening that will protect object against possible future impacts. In this study the influence of the structural strengthening of the damaged overpass on its strength parameters is investigated. For this purpose the advanced computational model was created. The numerical model includes the response of the reinforcement and prestressing tendons. This model enables precise description of damage caused due to the vehicle‘s impact and further analysis of re-impact of the strengthened structure.
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Blahovec, J. "Impact induced mechanical damage of Agria potato tubers." Research in Agricultural Engineering 51, No. 2 (February 7, 2012): 39–43. http://dx.doi.org/10.17221/4900-rae.

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Potato variety Agria was cultivated in different fertilisation and/or irrigation regimes. Tuber damage after impact was studied two months after the harvest with aim to find some relation between the regime of cultivation and impact test tuber damage. It was found that tuber cracking and/or crushing belongs to the most frequent mechanisms of damage masking usual bruising in many cases. Most severe tuber cracking was observed for cultivation with irrigation and classical methods of fertilisation. On the other hand, bruising was most frequent in case without any irrigation and fertilisation and in cases used for fertilisation the pig slurry. In every cultivation regime the bruising was more pronounced in narrower tuber side in comparison to the wider flat side.
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Katunin, Andrzej, and Pawel Kostka. "Characterisation of Impact Damage of Composite Structures Using Wavelet-Based Fusion of Ultrasonic and Optical Images." Advanced Composites Letters 23, no. 5 (September 2014): 096369351402300. http://dx.doi.org/10.1177/096369351402300504.

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This paper presents the novel approach for the impact damage characterisation of composite structures, which is based on fusion of ultrasonic scans and optical images. Both internal (inter-fibre failure, fibre failure, delaminations) and external (scratches and surface cracks) damages occurred in the composite structures during their operation need to be analysed due to their occurrence on both of these levels, especially in the case of impact damages. The presented approach allows for the improvement of the characterisation quality, i.e. the whole damaged area could be detected and localized. In order to assure the proper damage identification the wavelet-based fusion with application of appropriate wavelets and parameters of a fusion algorithm was used, which allows for distinction of different types of damages and overall improvement of the resulted image with respect to the human perception capability. The approach was validated experimentally on the glass-epoxy laminated plates after the low-velocity impacts. Representative cases of damaged structure were presented and analysed.
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Zaleha, M., Shahruddin Mahzan, and M. I. Idris. "Passive Damage Detection of Natural Fibre Reinforced Composites Using Sensor Response Data." Applied Mechanics and Materials 534 (February 2014): 17–23. http://dx.doi.org/10.4028/www.scientific.net/amm.534.17.

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This paper presents the detection of impact damage in a natural fibre reinforced composite plate under low velocity impact damage. Lead Zirconate Titanate (PZT) sensors were placed at ten different positions on each plate in order to record the response signals. The response signals captured from each sensor were collected for impacts performed by a data acquisition system. The impacted plates were examined with optical microscope to examine the damaged areas. It was found that the damaged size grew proportionally with impact force. The results also revealed that PZT sensors can be used to detect the damage extent with the waveform of sensor signals implying the damage initiation and propagation which detected above the damage force of 150N.
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Suchomel, Josef, Jan Šipoš, Ladislav Čepelka, and Marta Heroldová. "Impact of Microtus arvalis and Lepus europaeus on apple trees by trunk bark gnawing." Plant Protection Science 55, No. 2 (February 17, 2019): 142–47. http://dx.doi.org/10.17221/64/2018-pps.

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A unique evaluation of the apple tree trunk bark damage caused by common vole and European hare was presented. Damage was found in an apple orchard under organic farming, in Central Moravia (Czech Republic), at 700 m a.s.l. There were two cultivated apple cultivars Red Spring and Melodie/Angold. Damage occurred in winter with the snow cover lasting from December to February. In total 1 012 trees and 95.7% of trees were damaged. The cv. Red Spring was damaged more than cv. Melodie/Angold. Almost 90% of the dead trees were killed by common voles. While hares damaged both cultivars equally, voles damaged the cv. Red Spring to a significantly greater extent (P = 0.04). The study confirms the need of further research on the development of methodologies for orchard protection from damage caused by small mammals.
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Verma, Amrit Shankar, Nils Petter Vedvik, Zhen Gao, Saullo G. P. Castro, and Julie J. E. Teuwen. "Bondline Thickness Effects on Damage Tolerance of Adhesive Joints Subjected to Localized Impact Damages: Application to Leading Edge of Wind Turbine Blades." Materials 14, no. 24 (December 8, 2021): 7526. http://dx.doi.org/10.3390/ma14247526.

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The leading edges of wind turbine blades are adhesively bonded composite sections that are susceptible to impact loads during offshore installation. The impact loads can cause localized damages at the leading edges that necessitate damage tolerance assessment. However, owing to the complex material combinations together with varying bondline thicknesses along the leading edges, damage tolerance investigation of blades at full scale is challenging and costly. In the current paper, we design a coupon scale test procedure for investigating bondline thickness effects on damage tolerance of joints after being subjected to localized impact damages. Joints with bondline thicknesses (0.6 mm, 1.6 mm, and 2.6 mm) are subjected to varying level of impact energies (5 J, 10 J, and 15 J), and the dominant failure modes are identified together with analysis of impact kinematics. The damaged joints are further tested under tensile lap shear and their failure loads are compared to the intact values. The results show that for a given impact energy, the largest damage area was obtained for the thickest joint. In addition, the joints with the thinnest bondline thicknesses displayed the highest failure loads post impact, and therefore the greatest damage tolerance. For some of the thin joints, mechanical interlocking effects at the bondline interface increased the failure load of the joints by 20%. All in all, the coupon scale tests indicate no significant reduction in failure loads due to impact, hence contributing to the question of acceptable localized damage, i.e., damage tolerance with respect to static strength of the whole blade.
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Wang, Kai Lun, Zhi Dong Guan, Jun Guo, and Zeng Shan Li. "Impact Damage Resistance of Thin-Core Sandwich Structures Subjected to Low-Velocity Impact." Applied Mechanics and Materials 684 (October 2014): 176–81. http://dx.doi.org/10.4028/www.scientific.net/amm.684.176.

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This paper aims at evaluating the damage resistance of thin core sandwich structures, composed of aramid paper honeycomb core and carbon/ epoxy laminates face-sheets subjected to low velocity impact. The impact tests are performed using the instrumented impact-testing machine and resulting impact damages are inspected by Ultrasonic C-scan. In order to study the failure process of the core, which is important in the damage of the structures, flatwise compression test was carried out. Four parameters have been analyzed as follows: maximum load, total energy absorbed during impact, impact dent depth, and impact damage area. Nearly all impact force histories of panels have “twin peaks”, but the second peak of the 3mm-core structure is much larger than the first, which is quite different from others, when impact energy reached 5J, which were caused by the thickness of the core. Impact damages of thin-core sandwich structures are mainly delamination in the face-sheet and core crushing at low energy, and fiber breakage at relatively high energy. The damage processes of different groups of structures are essentially different and the impact resistance of the sandwich structure is greatly influenced by the face-sheet and core thickness.
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N. L. Schulte, G. K. Brown, and E. J. Timm. "Apple Impact Damage Thresholds." Applied Engineering in Agriculture 8, no. 1 (1992): 55–60. http://dx.doi.org/10.13031/2013.26033.

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Dissertations / Theses on the topic "Impact damage"

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Lloyd, James C. "Impact damage and damage tolerance of fibre reinforced advanced composite laminate structures." Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/6891.

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The primary objective of this work is to experimentally examine the effect of various geometric parameters on the impact damage and damage tolerance of thin carbon/epoxy plate and panel structures. Due to the number of parameters involved in a low velocity impact event and the complexity of the damage created, determining what effect individual parameters have is extremely demanding, especially when some of the parameters may even be coupled. However, by experimentally simulating in a controlled manner, either the impact event or the damage created, the effect of individual geometric parameters can be isolated and determined. A quasi-static indentation test has been used to simulate an impact event. The parameters of indenter size, nose shape, plate size and boundary condition, were examined. Four different plate failure modes were identified. Indenter nose shape was found to be the dominant geometric parameter, as a change in nose shape resulted in a change in failure mode and hence maximum load. From this work, a set of geometric parameters was selected for impact testing. Impact testing at various Incident Kinetic Energies (IKE) was performed on an instrumented drop weight impact rig. From examination of internal and external damage, the development of damage to increasing IKE was determined and shown to have four distinctive phases. Coupled with strike and rebound velocity measurementsa, non-linear relationship between IKE-damage area was established and a delamination threshold energy level of 1.1 J was calculated. Damaget olerance assessmenot f impacted panels was then performed in a Compression-After- Impact (CAI) rig. Strain gauge responses allowed global and local behaviour to be compared to intact specimens. It was found that once a critical damage size was surpassed, a gradual nonlinear degradation in compressive strength was observed until a point was reached where no further degradation in performance was attained. Furthermore, propagation of internal damage in a stable and unstable manner was directly linked to the nature of sublaminate buckling behaviour. Damaget olerance assessmenot f artificially delaminatedp anels loaded in compressionw as then performed. A single artificial delamination of various size, shape and orientation, embedded at the centre of a panel was examined. Delamination width was found to be the dominant geometric parameter. Hence, when comparing a circular delamination to an elliptical one of the same area, the effect of orientation and shape is aspect ratio dependent. Finally, a comparison of impacted and artificially delaminated panels was made.
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Matemilola, Saka Adelola. "Impact damage to composite materials." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319939.

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Cantwell, W. J. "Impact damage in carbon fibre composites." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/7834.

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Alves, Marcilio. "Damage mechanics applied to structural impact." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484220.

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Sultan, Mohamed Thariq Bin Hameed. "Impact damage characterisation in composite laminates." Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556739.

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The overall purpose of this research is to detect and quantify low-velocity impact damage in structures made from composite materials. This research represents a study using simplified coupon specimens. The composite material chosen for the current research is a woven Carbon Fibre Reinforced Polymer (CFRP) prepreg with a MTM57 resin system (42%RW) with CF2900 fabric (280 g/m2, 12K and 2 x 2 twill fabric). This woven material was fabricated to produce coupon size specimens of 250 mm x 150 mm with II, 12 and 13 layers of thickness. Piezoelectric sensors of type SONOX® P5 were placed on three different locations on each of the coupon size specimens to record the responses along different directions of the ply and at different distances from the impact events. Two different approaches were used to record the acceleration response signals resulting from the impact excitation. The first approach used the LMS Testlab Impact Modal Analysis environment in order to acquire time data and produce spectra for a number of non-damaging impacts from a standard instrumented impulse hammer. The second approach used an instrumented drop-test rig to perform the potentially damaging impacts. The impact energies for this approach were set to range from 0.37 J to 41.72 J. The response signals from each test specimen were recorded using the LMS SCADAS III data acquisition system and saved for evaluation. To gather the appropriate information to make inferences regarding the extent of the damage, two different methods were used to estimate the damaged area. The first method measured the damage size using a vernier caliper directly on the impacted surface. The second method used developed X-ray films. For the latter method, the damage area was estimated as the rectangular area bounded by the width and length of the largest flaws visible parallel to the two plate axes. The correlation between the damage area in terms of the impact energy and force detected is presented and discussed. In this research, following a systematic series of experiments on the induction of impact damage in composite specimens, Scanning Electron Microscopy was used to inspect the topographies of the impacted surface at high magnifications. Two different approaches were used here to observe the type of failure modes. The first observation was on the surface defects of the impacted samples whilst the second type, usually categorised as destructive testing, visualised the cross-sectional defects to look at the internal damages. A damage model and damage pattern was developed from this work, which can provide sufficient information on the type and extent of damage. Both the damage model and pattern can be used to provide fundamental understanding of damage and failure mode progression in carbon fibre reinforced compo~ites with varying layer numbers and impact energies. Wavelet analysis is a well-known and powerful approach to feature extraction for problems in condition monitoring and damage detection. In this research, it is applied in the context of impact damage detection and quantification. The approach was based on response time signals recorded from the piezoelectric sensors. Damage indices in terms of Root Mean Square, Power Spectrum Density and Envelope Mean were presented. The results show that all three potential damage indices show a monotonic increase with impact energy and this behaviour is important when damage needs to be detected directly from the impact data. The current research was based on the idea of implementing machine-learning methods to identify and categorise (damaging and non-damaging) impacts using structural response data. To implement this idea, a novelty detection method using outlier analysis was used. This method has proved to be a successful in separating the damaged and non-damage features and classifying the types of failure modes. This method was considered an excellent approach to identify and categorise the impact events using structural response data.
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Craven, Richard. "Modelling of impact damage in composites." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/6094.

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The work presented in this thesis is a detailed study of impact damage subjected to tensile and compressive loading to determine the stiffness reduction of the damage region and identify the damage mechanisms and important parameters that control the severity of the stiffness reduction. Once the important damage parameters had been indentified a homogenised non-linear soft inclusion model was developed. This represents the mechanical and material behaviour of an impact damage region under tensile and compressive loading in a simple and easy to implement user material format. The influence of different damage parameters was determined by building ply level models of idealised impact damage with delaminations at every ply interface and fibre fracture cracks within the plies. Parametric studies were conducted on the shape and size of delaminations and on crack density and crack distribution under tensile and compressive loading and these models were validated against experimental results. In order to determine the influence of fractured fibres on the residual compressive stiffness the fibres were modelled at the micro scale with individual fibres embedded in an elastic-plastic matrix.
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Pandya, Kedar Sanjay. "Impact damage behaviour of lightweight materials." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/270002.

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Impact damage resistance is an essential requirement of lightweight structural components for high-performance applications. The aim of this thesis is to study the impact damage and perforation behaviour of lightweight materials including thin aluminium alloy plates and carbon fibre reinforced epoxy composites. The focus of this investigation is on the stress state and strain rate dependence of failure, and the effect of microstructural modifications on indentation and impact response. The thesis is divided into three parts. In the first part (Chapter 2) the impact response of thin monolithic ductile aluminium alloy plates is investigated. Impact perforation experiments are performed using different projectile nose shapes to span a wide range of stress states at the onset of ductile fracture. Impact perforation behaviour, ballistic limit velocity, energy absorption capability and sensitivity to projectile tip geometry are evaluated. Modes of deformation and failure during impact are assessed experimentally. It is shown that modelling the stress state and strain rate dependence of plasticity and failure is crucial to accurately predict ductile fracture initiation in thin metal plates. In the second part (Chapters 3 and 4), the stress state and strain rate dependent yield and failure behaviour of epoxy resin is investigated. An iterative numerical-experimental approach is shown to be essential to develop a material model capable of predicting the failure behaviour of epoxy for a wide range of stress triaxialities across different regimes of failure. The influence of microstructural modifications in epoxy, through two different toughening strategies, on its failure behaviour is investigated. The effect of increasing the applied strain rate on the stress state dependent response of epoxy is investigated to provide an insight into the impact damage resistance of carbon fibre reinforced epoxy composites. In the third part (Chapter 5), experimental studies are conducted on the quasi-static indentation and impact perforation response of plain weave carbon fibre reinforced epoxy composites to investigate the effect of toughening the epoxy matrix to improve resistance to indentation and impact. The nose shape sensitivity of failure initiation in carbon/epoxy composite targets is assessed by considering indenters with different tip geometries. Conclusions and suggestions for future work are presented in Chapter 6.
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FENG, DIANSHI. "Simulation of low-velocity impact damage in sandwich composites." Doctoral thesis, Università degli Studi di Cagliari, 2014. http://hdl.handle.net/11584/266475.

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Composite materials have been increasingly used in many wind energy and transport applications due to their high strength, stiffness and excellent corrosion resistance. One of the main limitations of composites is their high susceptibility to impact-induced damage, which may result in significant strength reduction or even structural collapse. A detailed understanding of the extent and nature of impact damage is thus greatly needed for damage tolerance based structural design and a reliable estimation of the residual strength of a damaged structure. In this thesis, fracture mechanics based progressive damage models, cohesive interface elements and crushable foam models were used to predict the structural response and internal failure mechanisms of sandwich composites subjected to low-velocity impact; various failure modes typically observed in composites including delaminations, fibre fracture and matrix cracking were simulated and implemented into ABAQUS/Explicit through user-defined subroutines VUMAT. Numerical simulations were assessed and validated by a series of experimental analyses carried out through low-velocity impact tests (using drop-weight testing machine) and damage calibration tests (using X-radiography, Ultrasonics and optical microscopy of polished cross-sections). Good agreements were obtained between experiments and predictions not only in terms of structural responses as well as regarding the shape and size of internal damage under various investigated cases.
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Selver, Erdem. "Tow level hybridisation for damage tolerant composites." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/tow-level-hybridisation-for-damage-tolerant-composites(8cf53f8c-165f-4e8b-b67f-f8fd34c327e2).html.

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Fibre reinforced composites have higher specific strength and stiffness in comparison to metals. However, composites are susceptible to impact damage resulting in degradation of mechanical properties especially compression strength. Numerous studies have been conducted to improve the impact damage tolerance of composite laminates using modified resin systems, thermoplastic matrices, 3-D fibre architectures and through thickness reinforcement. This work is primarily focussed on incorporating non dissolvable polypropylene fibres (PP) in a thermoset matrix for improving the damage tolerance. Commingling and wrapping techniques have been investigated. PP fibres have been incorporated at the preform stage and hence do not adversely affect the viscosity of the resin during infusion. The healing effect of PP fibres on impact damaged composite laminates when heating is introduced has also been studied. High velocity impact test results showed that using commingled glass/PP fibres increased the total energy absorption of composite laminates by 20% due to the extensive plastic deformation of the PP fibres and through the use of toughening mechanisms in the form of resin cracking and delamination. It has been found that PP fibres provide protection to the glass fibres during low velocity impact loading, so fewer fibre breakages occur which lead to improved residual properties compared with pristine glass laminates. Compression after impact (CAI) tests showed that the residual strength as a percentage of non-impacted strength increased with percentage of PP fibres used. For impact of 20-50J, glass/epoxy laminates retained 32 45% of their compressive strength while laminates with 7%, 13% and 18% PP fibres retained 37 50%, 42-52% and 43-60% of their compressive strength, respectively. It was also observed that glass/PP woven laminates had better compressive strength retention (62 83%) than the glass/PP non-crimp laminates (37-50%). Composite laminates with high-modulus PP fibres (Innegra) exhibited higher residual compression strengths in comparison to laminates with lower modulus PP fibres. For 15-50J impact, glass/Innegra laminates showed residual compression strength of 50 63% in comparison to 39-60%; laminates without thermoplastic fibres exhibited 33 43% residual compression strength. Modulus of thermoplastic fibres appears to be important at higher energy levels. Healing of damaged commingled laminates produced a significant reduction in the damage area and a corresponding increase in CAI strength after heating at 200ºC; CAI strength of healed laminates is about 85% of undamaged samples in comparison to 60% for non-healed samples. A novel micro-wrapping technique, developed in this work, demonstrated significant reduction in damage area (46%) in comparison to the commingling method. Core wrapped laminates had higher residual strength (43-60%) than glass laminates (33-43%). Better PP distribution in core-wrapped composites helped to decrease the PP rich areas and the impact damage did not propagate easily in comparison to commingled composites. However due to the reduction in damage area, impact energy absorption in core wrapped laminates was lower than for commingled.
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Green, Philip Charles. "Impact damage characteristics of carbon-epoxy composites." Thesis, University of Hertfordshire, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332277.

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Books on the topic "Impact damage"

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North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Impact damage to composite structures. Neuilly sur Seine, France: AGARD, 1986.

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Advisory Group for Aerospace Research and Development. Structures and Materials Panel., ed. Impact damage to composite structures. Neuilly sur Seine: Agard, 1986.

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H, Abumeri G., and NASA Glenn Research Center, eds. Probabilistic evaluation of blade impact damage. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 2003.

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Finn, Scott R. Composite plates impact damage: An atlas. Lancaster, Pa: Technomic Pub. Co., 1991.

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Tao, Zhang. Study of impact damage of Nomex honeycomb sandwich plates. Harbin, Heilongjiang Province, China: School of Aeronautics, Harbin Institute of Technology, 1989.

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Committee, Zambia National Vulnerability Assessment. 2009 rapid flood impact assessment report. Lusaka: ZVAC, 2009.

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Engineers, Society of Automotive, and SAE World Congress (2001 : Detroit, Mich.), eds. Side impact, rear impact, and rollover. Warrendale, Pa: Society of Automotive Engineers, 2001.

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H, Robinson J., Hill S. A, and George C. Marshall Space Flight Center., eds. SEDS tether M/OD damage analyses. [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, Marshall Space Flight Center, 1997.

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Jones, G. H. S. The Suffield craters as analogues of impact structures. Ralston, Alta: Defence Research Establishment Suffield, 1995.

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Noor, Ahmed Khairy. Computational Methods for Crashworthiness: Proceedings of a workshop sponsored by the National Aeronautics and Space Administration, Washington, D. C., and the University of Virginia, Center for Computational Structures Technology, Hampton, Virginia and held at Langley Research Center, Hampton, Virginia, September 2-3, 1992. Hampton, Va: Langley Research Center, 1993.

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Book chapters on the topic "Impact damage"

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Sator, N., and H. Hietala. "Damage in impact fragmentation." In IUTAM Symposium on Dynamic Fracture and Fragmentation, 355–62. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-9760-6_26.

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Akimune, Yoshio, and Takao Izumi. "Impact Damage Evaluation from Remained Surface Damage Behavior." In Ceramic Transactions Series, 153–61. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118144152.ch13.

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Freitas, M., and L. Reis. "Impact Damage of Composite Structures." In Mechanics of Composite Materials and Structures, 319–29. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4489-6_19.

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Stevenson, T. J. "Methodology for Impact Damage Assessment." In The Behavior of Systems in the Space Environment, 291–98. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2048-7_14.

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Bless, Stephan, and Tiffany Chen. "Impact damage in layered glass." In IUTAM Symposium on Dynamic Fracture and Fragmentation, 151–58. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-9760-6_12.

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Kim, Hyonny, John C. Halpin, and Gabriela K. DeFrancisci. "Impact Damage of Composite Structures." In Long-Term Durability of Polymeric Matrix Composites, 143–80. Boston, MA: Springer US, 2011. http://dx.doi.org/10.1007/978-1-4419-9308-3_5.

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Forquin, Pascal. "Damage in Concrete Subjected to Impact Loading." In Handbook of Damage Mechanics, 1–27. New York, NY: Springer New York, 2021. http://dx.doi.org/10.1007/978-1-4614-8968-9_79-1.

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Forquin, Pascal. "Damage in Concrete Subjected to Impact Loading." In Handbook of Damage Mechanics, 551–77. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-60242-0_79.

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Syed Abdullah, S. I. B. "Damage and Failure in Composite Structures." In Impact Studies of Composite Materials, 57–72. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1323-4_5.

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Benachour, M., A. Hadjoui, and F. Z. Seriari. "Behavior of Stainless Steel 316L Under Impact Test." In Damage and Fracture Mechanics, 213–18. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2669-9_22.

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Conference papers on the topic "Impact damage"

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Ramamurthy, A. C., T. Ahmed, L. D. Favro, R. L. Thomas, D. K. Hohnke, and R. P. Cooper. "Stone Impact Damage to Automotive Paint Finishes: Post Impact Damage Analysis." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/930051.

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Shahid, Ikbal, Fu-Kuo Chnag, and Bharat Shah. "Impact damage resistance and damage tolerance of composite with progressive damage." In 37th Structure, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-1403.

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Hanson, D. A., A. W. Wolfson, M. C. Buckley, and D. R. Reimer. "Incorporating landscape connectivity and uncertainty into ecosystem restoration scaling of environmental damage." In ENVIRONMENTAL IMPACT 2016. Southampton UK: WIT Press, 2016. http://dx.doi.org/10.2495/eid160191.

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Schröder, H., P. Wagner, D. Kokkinos, W. Riede, and A. Tighe. "Laser-induced contamination and its impact on laser damage threshold." In SPIE Laser Damage, edited by Gregory J. Exarhos, Vitaly E. Gruzdev, Joseph A. Menapace, Detlev Ristau, and MJ Soileau. SPIE, 2013. http://dx.doi.org/10.1117/12.2030002.

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Hallström, Stefan, Andrey Shipsha, and Dan Zenkert. "Failure of Impact Damaged Foam Core Sandwich Beams." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2020.

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Abstract The scope of this paper is to investigate the structural integrity of sandwich beams subjected to various load cases after local impact. The studied impact damages can be characterised as core indentation and face/core interface damage while the faces are virtually unaffected by the impact. At subsequent loading different types of post impact failure occur, depending on the size of the impact damages and the applied load. Sandwich beams are impacted using two different impact energies and the resulting damage is inspected and measured. The measurements are used to characterise the damage and as input for analytical and finite element models in order to predict post impact failure in various load cases. The impact damages are modelled as face/core interface cracks but the approach is found to be too rough to achieve full agreement with experiments. It is concluded that the damaged face/core interface is not entirely separated but some bridging remains between the surfaces.
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Alsos, Hagbart S., Ragnar T. Igland, and Tore H. Søreide. "Evaluation of Pipeline Impact Damage." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83859.

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The safety of pipelines and subsea structures are key elements in subsea field developments. As part of the safety engineering, protection from dropped objects and third party impact actions is required. This article addresses this aspect. The combined response from global deflection and denting of pipelines subjected to impacts is investigated. Analysis and testing methods applied in pipeline design are presented. Focus is placed on the overall interaction between the impacting object, the deformed pipeline and energy dissipation by soil. Typically, pipeline damage from design codes provides conservative cross sectional damage estimates. This is confirmed from both simplified and detailed FE analyses, as well as impact experiments performed by REINERTSEN AS. One of the main objectives promoted by the authors is the importance of impact velocity and mass during impact, and not only the kinetic energy of the impact. The kinetic energy from a dropped object is unlikely to be fully dissipated as cross sectional deformation of the pipeline. Global deformations will be triggered, which implies that the dissipated energy going into local denting is reduced to a fractional value. This paper discusses the impact mechanics and seeks to estimate the fractional value by using simplified element analysis.
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Kawai, Nobuaki, Tomo Uemura, Kazuma Watanabe, and Sunao Hasegawa. "In-Situ Observation of Stress-Field Propagation and Damage Formation in Hypervelocity-Impacted Glass Materials." In 2022 16th Hypervelocity Impact Symposium. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/hvis2022-27.

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Abstract Hypervelocity impact experiments have been conducted on quartz glass and soda-lime glass to observe directly the impactinduced damage process progressing inside materials. Stress wave propagation and damage evolution associated with hypervelocity impact are visualized by employing the Edge-on Impact technique coupled with the polarized light shadowgraphy or scattered-light imaging method using an ultra-high-speed video camera. Recorded images clearly show how stress waves propagate and interact with each other, and how damages form and propagate during hypervelocity-impact events. A comparison of damage structures between quartz and soda-lime glasses reveals that differences in the short-range order of atomic configurations can affect the formation of macroscopic impact damage in amorphous materials such as glass. In experiments with a target consisting of two soda-lime glass components stacked in the direction of the ballistic axis, it is observed that damage form and propagate in the vicinity of the interface due to the interaction between the contact interface of the two glass components and the stress wave.
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Silling, S. A., and E. Askari. "Peridynamic Modeling of Impact Damage." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3049.

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The peridynamic theory is an alternative formulation of continuum mechanics oriented toward modeling discontinuites such as cracks. It differs from the classical theory and most nonlocal theories in that it does not involve spatial derivatives of the displacement field. Instead, it is formulated in terms of integral equations, whose validity is not affected by the presence of discontinuities such as cracks. It may be thought of as a “continuum version of molecular dynamics” in that particles interact directly with each other across a finite distance. This paper outlines the basis of the peridynamic theory and its numerical implementation in a three-dimensional code called EMU. Examples include simulations of a Charpy V-notch test, accumulated damage in concrete due to multiple impacts, and crack fragmentation of a glass plate.
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Kerezsi, Esther. "Impact Risks and Impact Damage of Space Debris." In 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.iac-03-iaa.5.p.09.

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Grove, B., A. Werner, and C. Han. "Explosion-induced damage to oilwell perforating gun carriers." In STRUCTURES UNDER SHOCK AND IMPACT 2006. Southampton, UK: WIT Press, 2006. http://dx.doi.org/10.2495/su060171.

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Reports on the topic "Impact damage"

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Goering, Jonathan, B. W. Rosen, and Brian Coffenberry. Initial Impact Damage of Composites. Fort Belvoir, VA: Defense Technical Information Center, January 1988. http://dx.doi.org/10.21236/ada229779.

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Scattergood, R. Fundamental aspects of erosion and impact damage. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/5122906.

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Ferguson, Eugene M., John A. Condon, and David N. Vazquez. Battle Damage Assessment Telemeter (BDAT) System Impact Test. Fort Belvoir, VA: Defense Technical Information Center, May 1998. http://dx.doi.org/10.21236/ada347122.

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Eckelberry, John R., Kenneth E. Halloway III, James V. Sullivan, and Samuel Epstein. Damage Control Operational Concepts (DCOC). Impact of Technology Insertion on Shipboard Damage Control Operations. Fort Belvoir, VA: Defense Technical Information Center, April 2003. http://dx.doi.org/10.21236/ada413895.

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Brown, Jr., J., M. Bampton, and J. Alzheimer. Value/impact assessment of jet impingement loads and pipe-to-pipe impact damage. Office of Scientific and Technical Information (OSTI), June 1990. http://dx.doi.org/10.2172/6740286.

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Huber, Cindy M., Joe P. McClure, and Noel D. Cost. Incidence and impact of damage to Virginia's timber, 1986. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987. http://dx.doi.org/10.2737/se-rb-90.

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Mistretta, Paul A., and Carl V. Bylin. Incidence and impact of damage to Louisiana's timber, 1985. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station, 1987. http://dx.doi.org/10.2737/so-rb-117.

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Roach, Dennis P., Raymond Bond, and Doug Adams. Structural Health Monitoring for Impact Damage in Composite Structures. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1154712.

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Venkataswamy Gowda, Dwani. Impact of test cell induced damage on membrane selectivity. Peeref, June 2023. http://dx.doi.org/10.54985/peeref.2306p6689077.

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Fink, Bruce K., Ahmed M. Monib, John W. Gillespie, and Jr. Damage Tolerance of Thick-Section Composites Subjected to Ballistic Impact. Fort Belvoir, VA: Defense Technical Information Center, May 2001. http://dx.doi.org/10.21236/ada394856.

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