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Journal articles on the topic 'Contact Delamination'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Giannakopoulos, A. E., K. F. Nilsson, and G. Tsamasphyros. "The Contact Problem at Delamination." Journal of Applied Mechanics 62, no. 4 (1995): 989–96. http://dx.doi.org/10.1115/1.2896034.

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The important phenomenon of delamination buckling is examined subjected to the condition of frictionless contact. Buckled delamination is examined in particular, because in-plane compressive loading is typical and detrimental. Two types of contact can be distinguished, local and global. The latter may occur everywhere in the plate while the local contact is limited to the crack front (negative KI stress intensity factors). Both local and global contact conditions were considered using a finite element scheme which employed nonlinear plate theory. The global contact problem is formulated as it

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2

Hadfield, M., T. A. Stolarski, and R. T. Cundill. "Delamination of ceramic balls in rolling contact." Ceramics International 19, no. 3 (1993): 151–58. http://dx.doi.org/10.1016/0272-8842(93)90036-q.

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3

Riccio, A., R. Cristiano, G. Mezzacapo, M. Zarrelli, and C. Toscano. "Experimental Investigation of Delamination Growth in Composite Laminates under a Compressive Load." Advances in Materials Science and Engineering 2017 (2017): 1–17. http://dx.doi.org/10.1155/2017/3431093.

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This paper focuses on the use of no-contact experimental techniques for monitoring the interlaminar damage evolution in composite laminates. Indeed, Infrared Thermography and Digital Image Correlation are adopted to investigate, in composite plates with artificial delamination, the influence of the delamination initial position on the delamination growth. The paper also investigates the feasibility of using a no-contact experimental technique for the measurement of displacement and strain during mechanical tests, such as the Digital Image Correlation, to evaluate, by means of indirect measurem

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4

Gillespie, David I., Andrew W. Hamilton, Robert C. Atkinson, et al. "Composite Laminate Delamination Detection Using Transient Thermal Conduction Profiles and Machine Learning Based Data Analysis." Sensors 20, no. 24 (2020): 7227. http://dx.doi.org/10.3390/s20247227.

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Delaminations within aerospace composites are of particular concern, presenting within composite laminate structures without visible surface indications. Transmission based thermography techniques using contact temperature sensors and surface mounted heat sources are able to detect reductions in thermal conductivity and in turn impact damage and large disbonds can be detected. However delaminations between Carbon Fibre Reinforced Polymer (CFRP) plies are not immediately discoverable using the technique. The use of transient thermal conduction profiles induced from zonal heating of a CFRP lamin

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5

NAGASHIMA, TOSHIO, and HIROSHI SUEMASU. "STRESS ANALYSES OF COMPOSITE LAMINATE WITH DELAMINATION USING X-FEM." International Journal of Computational Methods 03, no. 04 (2006): 521–43. http://dx.doi.org/10.1142/s0219876206001181.

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The extended finite element method (X-FEM) is applied to the stress analysis of composite laminates having interlaminar planar delamination. In X-FEM analysis, the geometry of such delaminations can be modeled independent of the finite elements. The domain form of the contour integral can be used to compute the energy release rate in conjunction with X-FEM. As numerical examples, three-dimensional analyses for DCB and ENF test specimens were performed by X-FEM with various enrichment nodes, and the obtained results were examined. In addition, a model of the no-friction-contact condition by X-F

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6

Kim, M. H., Kyong Yop Rhee, Young Nam Paik, and S. H. Ryu. "A Study on the Fracture Characteristics of Plasma-Treated Graphite/Epoxy Laminated Composites." Key Engineering Materials 321-323 (October 2006): 869–72. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.869.

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For a present study, the surfaces of graphite/epoxy prepregs were modified using plasma treatment to improve the delamination resistance behavior of graphite/epoxy laminated composites. The optimal treatment time was determined by measuring the change of contact angle with treatment time. Unidirectional DCB (double cantilever beam) specimens were used in the mode I delamination fracture tests. The delamination resistance curve of regular (untreated) specimen was compared with that of plasma-treated specimen in order to determine the effect of prepreg treatment on the resistance behavior. It wa

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7

Choi, Ik Hyeon. "Low-Velocity Impact Damage Prediction of Composite Laminates Using Linearized Contact Law." Key Engineering Materials 334-335 (March 2007): 261–64. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.261.

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Recently, author had presented that impact force history of composite laminates subjected to low-velocity impact could be well analyzed using linearized contact law instead of the modified Hertzian contact law. If the linearized contact law concept is applied in impact response analysis, the impact problem can be transformed as a general structural analysis problem, so general purpose FEM software can be used in this kind of impact response analysis. In the present study it will be shown that impact damage, specially delamination area, as well as impact response can be well analyzed using the

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8

Kang, Chao, Zhi Jun Han, Guo Yun Lu, and Shan Yuan Zhang. "Compressive Buckling of Composite Plates with a Delamination." Advanced Materials Research 150-151 (October 2010): 235–38. http://dx.doi.org/10.4028/www.scientific.net/amr.150-151.235.

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Compressive buckling of laminate plates with a delamination are simulated using ABAQUS 6.8 software. Effects of sizes, positions, asymmetric and shapes of delamination on the compressive buckling are investigated without the consideration of delamination growth and contact. The results indicate the sizes, positions, asymmetric and shapes of delamination have an important influence on compressive buckling.

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9

Ostachowicz, W., and A. Żak. "Vibration of a Laminated Beam with a Delamination Including Contact Effects." Shock and Vibration 11, no. 3-4 (2004): 157–71. http://dx.doi.org/10.1155/2004/714137.

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Certain results are presented in this paper on damped vibration of a laminated cantilever beam with a single closing delamination. In order to investigate this task the finite element method has been applied in the current study. For modelling the beam higher order shear deformation beam finite elements have been used. The vibration of the beam is investigated in the time domain using a dynamic contact algorithm developed by the authors. The algorithm is based on the Newmark method and also incorporates a Newton-Raphson based procedure for resolving the equation of motion. The time series obta

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10

Mohammadi, S., S. Forouzan-sepehr, and A. Asadollahi. "Contact based delamination and fracture analysis of composites." Thin-Walled Structures 40, no. 7-8 (2002): 595–609. http://dx.doi.org/10.1016/s0263-8231(02)00014-9.

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11

Nguyen, Huu Hung, Pal Jen Wei, and Jen Fin Lin. "Electric contact resistance for monitoring nanoindentation-induced delamination." Advances in Natural Sciences: Nanoscience and Nanotechnology 2, no. 1 (2011): 015007. http://dx.doi.org/10.1088/2043-6262/2/1/015007.

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12

Nouari, M., H. A. Abdel-Aal, and M. El Mansori. "Analysis of coating delamination under extreme contact loading." Tribology Letters 23, no. 1 (2006): 39–45. http://dx.doi.org/10.1007/s11249-006-9103-y.

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13

Park, Won Su, Sang Woo Choi, Joon Hyun Lee, Kyeong Cheol Seo, and Joon Hyung Byun. "Laser-Generated Ultrasonic Technique for Inspecting Delamination in CFRP." Key Engineering Materials 321-323 (October 2006): 968–71. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.968.

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For improving quality of a carbon fiber reinforced composite material (CFRP) by preventing defects such as delamination and void, it should be inspected in fabrication process. Novel non-contacting evaluation technique is required because the transducer should be contacted on the CFRP in conventional ultrasonic technique during the non-destructive evaluation and these conventional contact techniques can not be applied in a novel fiber placement system. For the non-destructive evaluation of delamination in CFRP, various methods for the generation and reception of laser-generated ultrasound are

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14

Bull and McBride. "Transient Contact Opening Forces in a MEMS Switch Using Au/MWCNT Composite." Technologies 7, no. 4 (2019): 69. http://dx.doi.org/10.3390/technologies7040069.

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Most failures in micro electromechanical system (MEMS) switches can be attributed to the degradation of contact surfaces and sticking contacts. A wear-tolerant composite contact material, composed of a Au film supported by multi walled carbon nanotubes (Au/MWCNT), has been engineered to provide wear resistance and enhanced switching lifetime with conductive properties close to pure Au. Switching lifetimes of billions of cycles have been demonstrated, representing greatly increased performance over thin film Au. Below the arcing threshold (~12 V) the wear mechanism has been shown to be a combin

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15

Liu, Yu, Qianqi Xu, Xiaodan Sun, Guotao Yang, and Guotang Zhao. "Simulation of Delamination Evolution of Slab Ballastless Track under Vertical Impact." Shock and Vibration 2021 (June 28, 2021): 1–13. http://dx.doi.org/10.1155/2021/4022875.

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During the running of a high-speed train, the wheel may bounce on the rail due to the track irregularity. The wheel bounce could generate a vertical impact, leading to the initiation and expansion of delamination between layers of the track structure. In this paper, the evolution of the interfacial damage and delamination subjected to the vertical impact is simulated using finite element analysis (FEA). In the FEA, a bilinear cohesive zone model (CZM) is adopted to simulate the interface between the track slab and the CA mortar layer. For different levels of impact energy, the contact force, v

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16

Abdul-Baqi, A., and E. Van der Giessen. "Delamination of a strong film from a ductile substrate during indentation unloading." Journal of Materials Research 16, no. 5 (2001): 1396–407. http://dx.doi.org/10.1557/jmr.2001.0195.

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In this work, a finite element method was performed to simulate the spherical indentation of a ductile substrate coated by a strong thin film. Our objective was to study indentation-induced delamination of the film from the substrate. The film was assumed to be linear elastic, the substrate was elastic–perfectly plastic, and the indenter was rigid. The interface was modeled by means of a cohesive surface. The constitutive law of the cohesive surface included a coupled description of normal and tagential failure. Cracking of the coating itself was not included. During loading, it was found that

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17

Živković, Vjekoslav, Gustav Gabrek, and Goran Mihulja. "Influence of natural surface ageing on bonding quality of thermally modified oak and beech wood." Drvna industrija 70, no. 3 (2019): 273–78. http://dx.doi.org/10.5552/drvind.2019.1918.

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This paper presents the influence of natural surface ageing in indoor conditions on bonding quality of thermally modified wood used in structural laminated products. Two unmodified and thermally modified wood species were used for the experiment: oak and beech. Samples were planed and glued with MUF adhesive 2 hours, 1, 2, 6, 10, and 18 days after planing. Properties of laminated beech and oak beams, namely shear strength, delamination and contact angle, were measured in order to detect 1) suitability of wood species for lamination process and 2) influence of extended storage time after planin

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18

Kormaníková, Eva. "Delamination of Laminate Plates." Advanced Materials Research 969 (June 2014): 97–100. http://dx.doi.org/10.4028/www.scientific.net/amr.969.97.

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The paper deals with numerical modeling of delamination of laminate plate consists of unidirectional fiber reinforced layers. The methodology adopts the first-order shear laminate plate theory and fracture and contact mechanics. There are described sublaminate modeling and delamination modeling by the help of finite element analysis. With the interface modeling there is calculated the energy release rate along the lamination front. Numerical results are given for mixed mode delamination problems by implementing the method in a 2D finite analysis, which utilizes shear deformable plate elements

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19

Ha, Job, and Kyung Young Jhang. "Nonlinear Ultrasonic Method to Detect Micro-Delamination in Electronic Packaging." Key Engineering Materials 297-300 (November 2005): 813–18. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.813.

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The linear ultrasonic technique has been extensively used as a powerful, non-destructive test tool for reliability testing and failure analysis of electronic packaging. This is used most often in the inspection of defects such as delaminations, voids, or cracks through use of a SAM (Scanning Acoustic Microscope). Then, as the reliability level that is required of electronic packaging becomes higher and the thickness of package becomes thinner, the possible defect which needs to be detected becomes smaller. In the conventional SAM, however it is very difficult to detect small defects less than

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20

Nagentrau, Muniandy, Abdul Latif Mohd Tobi, Saifulnizan Jamian, and Yuichi Otsuka. "HAp Coated Hip Prosthesis Contact Pressure Prediction Using FEM Analysis." Materials Science Forum 991 (May 2020): 53–61. http://dx.doi.org/10.4028/www.scientific.net/msf.991.53.

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Total hip replacement is surgical procedure which is widely performed in most of the developed countries due to rapid aging. The extensive application of titanium alloy as hip prosthesis can be seen because of its suitable properties such as good biocompatibility, light weight and high strength. However, coating or bond is required as titanium alloy ineffective to be adhered directly with human bone. Hydroxyapatite (HAp) is common coating material used to bond Ti-6Al-4V hip prosthesis with human bone. HAp-Ti-6Al-4V interface is a possible fretting wear region which is subjected to significant

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21

Yang, Jin Hua, Peng Jun Zhang, and Chang Zhao Qian. "Energy Release Rate of Delaminated Piezoelectric Shell Subjected to Electro-Thermo-Mechanical Loadings." Applied Mechanics and Materials 751 (April 2015): 118–23. http://dx.doi.org/10.4028/www.scientific.net/amm.751.118.

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The delamination growth may occur in delaminated piezoelectric shell subjected to external load and it will further cause structural failure. Based on the variational principle of moving boundary and considering the contact effect between delamination regions, in this paper, the nonlinear governing equations for the delaminated piezoelectric shell under electro-thermo-mechanical loadings are derived, and the corresponding boundary and matching conditions are given. At the same time, according to the Griffith criterion, the formulas of energy release rate along the delamination front are obtain

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22

Nakao, Shogo, and Takahiro Hayashi. "Non-contact imaging for delamination using diffuse field concept." Japanese Journal of Applied Physics 58, SG (2019): SGGB07. http://dx.doi.org/10.7567/1347-4065/ab0ada.

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23

HAYASHI, Takahiro, and Shogo NAKAO. "Non-destructive Evaluation for Delamination with Non-contact Measurements." Proceedings of Mechanical Engineering Congress, Japan 2018 (2018): J0410502. http://dx.doi.org/10.1299/jsmemecj.2018.j0410502.

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24

Manoach, Emil, Jerzy Warminski, and Anna Warminska. "Large amplitude vibrations of heated Timoshenko beams with delamination." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 1 (2015): 88–101. http://dx.doi.org/10.1177/0954406215570702.

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In this work, the large amplitude vibration of a heated Timoshenko composite beam having delamination is studied. The model of delamination considers the contact interaction between sublaminates including normal forces, shear forces, and additional damping due to the interaction of sublaminates. This work is an extension of the previous analysis based on a model of the dynamic behavior of a beam with delamination considering additionally the nonlinearities due to large displacements and temperature changes. Numerical calculations are performed in order to estimate the influence of the delamina

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25

Pan, Cheng-Tang, Shao-Yu Wang, Chung-Kun Yen, et al. "Study on Delamination Between Polymer Materials and Metals in IC Packaging Process." Polymers 11, no. 6 (2019): 940. http://dx.doi.org/10.3390/polym11060940.

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The electronic package interconnects electronic signals from one area to another and package delamination is a serious problem in the configuration of materials. This study focused on decreasing the delamination of the low-profile fine pitch ball grid array (LFBGA) and plastic ball grid array (PBGA) packages in terms of polymer thermal issue, metal bonding and bonding mechanisms. PBGA and LFBGA are a very common type of packaging processes in the electronics industry. The present study dealt first with delamination of the LFBGA packaging, through characterization and determination of physical

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26

Chang, Fu-Kuo, and Zafer Kutlu. "Response of Composite Shells Containing a Delamination." Applied Mechanics Reviews 42, no. 11S (1989): S48—S53. http://dx.doi.org/10.1115/1.3152407.

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The objective of the study was to evaluate the mechanical response of composite shells containing a delamination. An analytical model was developed which consists of a structural analysis for calculating the global deformations of the structures and a fracture mechanics analysis for determining the delamination growth in the structures. In order to accurately predict the response of the delaminated shells during loading, a contact-slip condition along the delamination interface was introduced in the model through a Lagrangian multiplier technique. Based on the model, a nonlinear finite element

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27

Jin, Feng, Kikuo Kishimoto, Hirotsugu Inoue, and Takashi Tateno. "Experimental Investigation on the Interface Properties Evaluation in Piezoelectric Layered Structures by Love Waves Propagation." Key Engineering Materials 297-300 (November 2005): 807–12. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.807.

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The linear ultrasonic technique has been extensively used as a powerful, non-destructive test tool for reliability testing and failure analysis of electronic packaging. This is used most often in the inspection of defects such as delaminations, voids, or cracks through use of a SAM (Scanning Acoustic Microscope). Then, as the reliability level that is required of electronic packaging becomes higher and the thickness of package becomes thinner, the possible defect which needs to be detected becomes smaller. In the conventional SAM, however it is very difficult to detect small defects less than

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28

Vishwanath, K. S. "Computational Investigation of through the Width Delamination of a Composite Laminate using Surface based Cohesive Contact Behaviour." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 743–47. http://dx.doi.org/10.22214/ijraset.2021.35076.

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The fiber reinforced polymer laminates have found extensive applications because of its advantages over other materials in terms of strength to weight ratio, manufacturing flexibility and so on. But in the transverse direction, strength is comparatively less so that a failure mechanism called delamination will occur in case of poor manufacturing or when tools are dropped. In this paper, Surface based Cohesive contact behavior is implemented at the interface between base and sub laminate to investigate for 60mm through the width buckling driven delamination growth. The computational prediction

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29

Kšiňan, Jozef, and Roman Vodička. "An Energetic Approach to Rate Independent Delamination with Cohesive Contact - An SGBEM Implementation." Advanced Materials Research 969 (June 2014): 24–27. http://dx.doi.org/10.4028/www.scientific.net/amr.969.24.

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A mathematical model for analysis of contact delamination problems has been developed and implemented into the program Matlab by means of the Symmetric Galerkin Boundary Element Method (SGBEM). The SGBEM numerical algorithm enables to exploit an energetic formulation which governs interface rupture. A rate-independent model of the delamination process is obtained, considering an interface damage variable. A numerical algorithm has been proposed to provide maximallydissipative local solution which yields numerically stable time-discretization. The developed 2-dimensional sample example of mathe

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30

Parrinello, Francesco, and Giuseppe Marannano. "Cohesive delamination and frictional contact on joining surface via XFEM." AIMS Materials Science 5, no. 1 (2018): 127–44. http://dx.doi.org/10.3934/matersci.2018.1.127.

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31

Panagiotopoulos, Christos G., Vladislav Mantič, and Tomáš Roubíček. "Two adhesive-contact models for quasistatic mixed-mode delamination problems." Mathematics and Computers in Simulation 145 (March 2018): 18–33. http://dx.doi.org/10.1016/j.matcom.2016.10.004.

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32

TOHMYOH, Hironori, and Masumi SAKA. "Delamination Inspection in IC Packages Using Dry-Contact Ultrasonic System." Proceedings of the 1992 Annual Meeting of JSME/MMD 2002 (2002): 521–22. http://dx.doi.org/10.1299/jsmezairiki.2002.0_521.

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33

MISAWA, Masahide, and Dai WATANABE. "G030071 Study on the Delamination Method using the Hertzian Contact." Proceedings of Mechanical Engineering Congress, Japan 2011 (2011): _G030071–1—_G030071–3. http://dx.doi.org/10.1299/jsmemecj.2011._g030071-1.

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34

Neuenschwander, Jürg, Sergio J. Sanabria, Philipp Schuetz, Robert Widmann, and Mareike Vogel. "Delamination detection in a 90-year-old glulam block with scanning dry point-contact ultrasound." Holzforschung 67, no. 8 (2013): 949–57. http://dx.doi.org/10.1515/hf-2012-0202.

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Abstract Glued laminated timber (glulam) is known in timber constructions since more than 100 years. Glulam members can delaminate due to aging and excessive changes of temperature and humidity. This results in significantly reduced load bearing capability of the affected structural members. This contribution focuses on the ultrasonic point-contact inspection of gluing plane delamination as a nondestructive method. Ultrasonic measurements on a section of a 90-year-old roofing glulam member are presented. The results are compared with manual detection and evaluation of delamination with a feele

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35

Vishwanath, K. S. "Computational Investigation of Square Embedded Delamination of a Composite Laminate using Surface based Cohesive Contact Behavior." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 909–13. http://dx.doi.org/10.22214/ijraset.2021.35114.

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The fiber reinforced polymer laminates have found extensive applications because of its advantages over other materials in terms of thrust to weight ratio, strength to weight ratio, manufacturing benefits such as tailoring, resistance to erosion and corrosion and so on. In the transverse direction, strength, stiffness and stability are comparatively less so that a failure mechanism called interface delamination comes into picture due to poor manufacturing or when tools are dropped that would create an impact load. In this paper, Surface based Cohesive contact behavior is implemented at the int

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36

Khashaba, Usama A., Mohamed S. Abd-Elwahed, Ismai Najjar, et al. "Heat-Affected Zone and Mechanical Analysis of GFRP Composites with Different Thicknesses in Drilling Processes." Polymers 13, no. 14 (2021): 2246. http://dx.doi.org/10.3390/polym13142246.

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This article presents a comprehensive thermomechanical analysis and failure assessment in the drilling of glass fiber-reinforced polymer (GFRP) composites with different thicknesses using a CNC machine and cemented carbide drill with a diameter of 6 mm and point angles of ϕ = 118°. The temperature distribution through drilling was measured using two techniques. The first technique was based on contactless measurements using an IR Fluke camera. The second was based on contact measurements using two thermocouples inserted inside the drill bit. A Kistler dynamometer was used to measure the cuttin

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LEE, SEUNG-JOON, JOON-HYUN LEE, and JOON-HYUNG BYUN. "EXPERIMENTAL NON-CONTACT EVALUATION OF DELAMINATION IN CFRP COMPOSITE PLATES BY LASER GENERATION/AIR-COUPLED DETECTION ULTRASONIC SYSTEM." Modern Physics Letters B 22, no. 11 (2008): 827–32. http://dx.doi.org/10.1142/s0217984908015450.

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The objective of this research is to develop non-contact and real time inspection technique based on laser generated ultrasound for evaluating near-surface delamination in Carbon/Epoxy composite fabricated from automated fiber placement system. In this study, A hybrid laser generation/air-coupled detection ultrasonic system for detection and visualization of delamination in composite plates with simulated delamination of the area of 20 mm × 20 mm between the first and the second layer. Optical fiberized Nd :YAG pulse laser (532 nm, 32 mJ) with linear slit array is used to generate ultrasonic g

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38

Peng, Wei, and Bharat Bhushan. "Sliding Contact Analysis of Layered Elastic/Plastic Solids With Rough Surfaces." Journal of Tribology 124, no. 1 (2001): 46–61. http://dx.doi.org/10.1115/1.1401018.

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A three-dimensional numerical model is presented to investigate the quasi-static sliding contact behavior of layered elastic/plastic solids with rough surfaces. The model is applicable for both single-asperity contact and multiple-asperity contacts. The surface deformation is obtained based on a variational principle. The surface and subsurface stresses in the layer and the substrate are determined with a Fast Fourier transformation (FFT) based scheme and von Mises and principal tensile stresses are computed accordingly. Contact statistics, such as fractional contact area, maximum pressure/E2

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39

Juhász, Zoltán, Tamás Turcsán, Tamás Bence Tóth, and András Szekrényes. "Sensitivity analysis for frequency based prediction of crack size in composite plates with through-the-width delamination." International Journal of Damage Mechanics 27, no. 6 (2017): 859–76. http://dx.doi.org/10.1177/1056789517709893.

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This work combines modal analysis measurements with a novel 2D finite element plate model, which is capable to determine the delamination growth based on the change in the measured frequencies. The base of the presented method is a finite element model incorporating the Classical Laminated Plate Theory, and it is capable to estimate the eigenfrequencies of a rectangular plate with through-the-width delamination and straight crack front using arbitrary boundary conditions. The model contains special types of finite elements for modelling the delamination. This results a contact free model, whic

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40

Long, Shu Chang, Ze Jin Li, Gang Kuang, Yan Bin He, and Xiao Hu Yao. "Research on Low Velocity Impact Damage of Laminated Composite." Applied Mechanics and Materials 513-517 (February 2014): 201–5. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.201.

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Damage caused by low-velocity-impact in laminated composite will significantly reduce the strength of the structure. A new numerical model is proposed for the research on the impact induced damage of laminated composite. Multiple forms of damage within and between layers are considered in this model. The cohesive contact technology is used to simulate the bonding properties between layers. The model can describe the information of delamination more accurately and efficiently. Then, a study is carried out to investigate the relationship of delamination and matrix cracking caused by low-velocity

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41

Sato, Tsutomu, Tsuyoshi Saito, and Shinji Fujita. "Mechanism of Diamond-Like Carbon (DLC) Delamination under Rolling Contact Condition." Tribology Online 3, no. 6 (2008): 337–41. http://dx.doi.org/10.2474/trol.3.337.

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42

Virakthi, Ananth, Soonwook Kwon, Sung W. Lee, and Mark E. Robeson. "Delamination resistance of composite laminated structures reinforced with angled, threaded, and anchored Z-pins." Journal of Composite Materials 53, no. 11 (2018): 1507–19. http://dx.doi.org/10.1177/0021998318805201.

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The delamination resistance of Z-pinned laminates is directly dependent on the strength of the pin–laminate bonding at the interface. In this paper, we investigate novel approaches to the Z-pinning technology in order to increase delamination strength via enhancing mechanical interlocking of the pins. Toward this end, we study the effect of pin insertion at an angle to the vertical in contrast to the conventional vertical pin insertion. Subsequently, a novel variety of pin, namely the threaded pin, is studied as a candidate for reinforcement which increases mechanical interlocking between the

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Karmakar, Amit, and Kikuo Kishimoto. "Transient Dynamic Response of Delaminated Composite Twisted Cylindrical Shells Subjected to Low Velocity Impact." Key Engineering Materials 297-300 (November 2005): 1285–90. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.1285.

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In this paper a transient dynamic finite element analysis is presented to study the response of centrally impacted delaminated composite pretwisted cylindrical shells. An eight noded isoparametric plate bending element is employed in the finite element formulation. Effects of transverse shear deformation and rotary inertia are included. To satisfy the compatibility of deformation and equilibrium of resultant forces and moments at the delamination crack front a multipoint constraint algorithm is incorporated. The modified Hertzian contact law which accounts for permanent indentation is utilized

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Shield, R. T. "Variational Principles for Some Nonstandard Elastic Problems." Journal of Applied Mechanics 54, no. 4 (1987): 768–71. http://dx.doi.org/10.1115/1.3173114.

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Variational principles are derived for some nonstandard problems involving elastic bodies in smooth contact. For these problems, the portions of the surfaces where one boundary condition holds rather than another must be determined as part of the solution to the problem. Cases considered include a body containing a crack or delamination, indentation by a rigid punch, and contact with an elastic foundation.

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Fan, Guopeng, Haiyan Zhang, Wenfa Zhu, Hui Zhang, and Xiaodong Chai. "Numerical and Experimental Research on Identifying a Delamination in Ballastless Slab Track." Materials 12, no. 11 (2019): 1788. http://dx.doi.org/10.3390/ma12111788.

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This paper aims to adopt the total focusing method (TFM) and wavenumber method for characterizing a delamination in ballastless slab track. Twelve dry point contact (DPC) transducers located at the upper surface of the slab track compose a linear array. These transducers are employed to actuate shear waves, which are suitable for identifying the delamination. The technique of removing the surface wave has been implemented for only retaining the scattered wave caused by the delamination and the reflected wave from the bottom of bed plate. Numerical and experimental results demonstrate that the

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Kim, J. W., J. H. Kim, M. N. Janal, and Y. Zhang. "Damage Maps of Veneered Zirconia under Simulated Mastication." Journal of Dental Research 87, no. 12 (2008): 1127–32. http://dx.doi.org/10.1177/154405910808701210.

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Zirconia-based restorations often fracture from chipping and/or delamination of the porcelain veneers. We hypothesized that veneer chipping/delamination is a result of the propagation of near-contact-induced partial cone cracks on the occlusal surface under mastication. Masticatory loading involves the opposing tooth sliding along the cuspal inner incline surface with an applied biting force. To test this hypothesis, we cemented flat porcelain-veneered zirconia plates onto dental composites and cyclically loaded them (contact–slide–liftoff) at an inclination angle as a simplified model of zirc

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TANG, MINGQIAO, JIANGHONG XUE, HONG YUAN, and RENHUAI LIU. "MACRO-MICRO ANALYSIS FOR ANTI-PENETRATING POSTBUCKLING OF FIBER REINFORCED, DEBONED LAMINATES WITH CONTACT EFFECTS." International Journal of Applied Mechanics 06, no. 04 (2014): 1450044. http://dx.doi.org/10.1142/s1758825114500446.

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This paper presents a close-form solution for the anti-penetrating postbuckling problem of fiber reinforced, rectangular laminates. The laminate has a through-width debonded region buried at the center position and is simply supported at its four edges subjected to the in-plane compressive load. Based on the previous analysis of the contact kinematics from micro mechanics of composite material, the nonlinear contact effects at the interfaces of the debonded region are considered and characterized by a contact factor. Governing equations are established and are solved using the perturbation app

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Roubíček, Tomáš, Christos G. Panagiotopoulos, and Vladislav Mantič. "Local-solution approach to quasistatic rate-independent mixed-mode delamination." Mathematical Models and Methods in Applied Sciences 25, no. 07 (2015): 1337–64. http://dx.doi.org/10.1142/s0218202515500347.

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The model of quasistatic rate-independent evolution of a delamination at small strains in the so-called mixed mode, i.e. distinguishing opening (Mode I) from shearing (Mode II), devised in [Delamination and adhesive contact models and their mathematical analysis and numerical treatment, Chap. 9, in Mathematical Methods and Models in Composites, ed. V. Mantič (Imperial College Press, 2014), pp. 349–400; and in Quasistatic mixed-mode delamination model, Discrete Contin. Dynam. Syst. Ser. S 6 (2013) 591–610], is rigorously analyzed in the context of a concept of stress-driven local solutions. The

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Liu, Jinbo, Xiaoli Wang, Hanqing Li, and Weixu Yang. "Delamination mechanism maps for coatings/substrates system subjected to adhesive contact loads." Thin Solid Films 626 (March 2017): 159–67. http://dx.doi.org/10.1016/j.tsf.2017.02.042.

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Majidi, Carmel, and George G. Adams. "Adhesion and delamination boundary conditions for elastic plates with arbitrary contact shape." Mechanics Research Communications 37, no. 2 (2010): 214–18. http://dx.doi.org/10.1016/j.mechrescom.2010.01.002.

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