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Journal articles on the topic 'Interfacial fatigue'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Chen, Yan Hua, Jian Yu Chu, and Qing Jie Zhu. "Effects of Coating on Interfacial Fatigue of Fiber-Reinforced Composites." Advanced Materials Research 97-101 (March 2010): 830–33. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.830.

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Coating is one of important parts in fiber-reinforced composite. Under cyclic loading, the effect of coating on interfacial fatigue is investigated based on double shear-lag model. Stresses of components are obtained. Relationship for analyzing interfacial debonding is established by the Paris Formula. Interfacial fatigue on fiber/coating and coating/matrix is simulated. It can be seen that interfacial debonding on different interfaces meet energy conservation law in general.

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2

Dai, Yao, Wei Tan, Chang Qing Sun, and Jia Wen He. "Determination of Growing Direction of Fatigue Crack." Key Engineering Materials 353-358 (September 2007): 1057–59. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1057.

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The stress field of an interfacial crack in non-homogeneous materials is computed using the semi-analytical method of arbitrary lines (MAL). Then, the eigen-functions of stress, strain and displacement, i.e. the angular distribution functions near a crack tip, are analyzed based on our wedge-shape non-homogeneous model. Finally, the growing direction of the interfacial crack is determined according to the relevant maximum normal stress criterion accurately. Therefore, the effective approach is provided for solving the complicated crack growing directions of an interfacial crack in non-homogeneous materials.

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3

Zhao, X. J., G. Q. Zhang, J. F. J. M. Caers, and L. J. Ernst. "Solders Fatigue Prediction Using Interfacial Boundary Volume Criterion." Journal of Electronic Packaging 125, no. 4 (December 1, 2003): 582–88. http://dx.doi.org/10.1115/1.1604160.

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In this paper, an “interfacial boundary volume” based damage criterion was proposed in combination with the modified Coffin-Manson model to predict solder fatigue. This criterion assumes that mainly, the behavior of the thin solder layer at chip pad interface contributes to the solder fatigue, not the whole solder joint or the averaged strains from randomly selected elements. The damage parameter was thus calculated by averaging the visco-plastic strain range over the interfacial boundary layer volume in the solder and later related to the corresponding fatigue life of experimental test through least-squares curves fitting to determine the empirical coefficients in the Coffin-Manson equation. As a demonstrator, the solder joint fatigue in wafer level chip scale packaging under thermal shock loading was analyzed. An appropriate constitutive relation from Darveaux was used to model the inelastic deformation of the solder alloy, and the different stress-strain responses resulting from different designs were calculated. The analysis results were used to develop the empirical fatigue model based on the interfacial boundary volume damage criterion and then this fatigue model was used for prediction. The fatigue lives of chip scale packaging with variable solder land size and component size were analyzed using this model. The prediction results match well with those from experimental tests. For this demonstrator, it was also shown that the empirical model based on the interfacial boundary volume criterion was more accurate than the models obtained from other strain averaging methods.

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4

Ni, Xiang, Chao Chen, and Jianyu Li. "Interfacial fatigue fracture of tissue adhesive hydrogels." Extreme Mechanics Letters 34 (January 2020): 100601. http://dx.doi.org/10.1016/j.eml.2019.100601.

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5

Yang, Yan, Shao Long Huang, Qing Jun Ding, and Xin Yan Peng. "The Property Research on Interfacial Modificated Semi-Flexible Pavement Material." Applied Mechanics and Materials 71-78 (July 2011): 1090–98. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.1090.

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Based on shearing test, bending test in low temperature, fatigue test and dynamic modulus test, the text researched the effect on the property of the semi-flexible pavement by a kind of interfacial modifier. The study showed the feasible content of interfacial modifier was 0.4～0.6% . Used 0.4%, the shear strength reached 1.83MPa, flexural strength 6.97MPa, and fatigue-life was over 40000 at 0.2 stress ratio. From interfacial modification, the synthesis property of semi-flexible pavement was especially perfect.

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6

Chen, Yan Hua, and Qing Jie Zhu. "Numerical Simulation of Interfacial Bonding Degradation of Composites under Two-Stage Loading." Materials Science Forum 575-578 (April 2008): 869–74. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.869.

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Bonding degradation at interface is one of main damage forms of composites, especially under fatigue loading. Interfacial bonding degradation of FRC under two-stage tension loading is studied, which is base for variable-amplitude cyclic loading existing widely in actual engineering. Based on the shear-lag model and considered the asymmetry of interfacial damage, the mechanical governing equations of fiber and matrix are established and related solutions are obtained firstly. Two kinds of loading models are chosen, one is low-high alternate loading, and the other is low early and high late loading. By the aid of the Paris law and the energy release theory, a relationship between debond rate and cycle number is established. Then the interfacial debonding is simulated under the two-stage tension loading. The rules of the crack growth are analyzed for low-high two-stage loadings. It is found that stress amplitude has great influence on interfacial debonding under two-stage loading. Low stress amplitude in a certain range can postpone interfacial bonding degradation. And interfacial damage extent is greater than that under constant-amplitude fatigue loading. Present study is helpful for analyzing the fatigue damage of engineering materials and structures.

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7

Zhang, QingKe, HeFei Zou, and Zhe-Feng Zhang. "Improving tensile and fatigue properties of Sn–58Bi/Cu solder joints through alloying substrate." Journal of Materials Research 25, no. 2 (February 2010): 303–14. http://dx.doi.org/10.1557/jmr.2010.0035.

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To eliminate the Bi segregation and interfacial embrittlement of the SnBi/Cu joints, we deliberately added some Ag or Zn elements into the Cu substrate. Then, the reliability of the SnBi/Cu–X (X = Ag or Zn) solder joints was evaluated by investigating their interfacial reactions, tensile property, and fatigue life compared with those of the SnBi/Cu and SnAg/Cu joints. The experimental results demonstrate that even after aging for a long time, the addition of the Ag or Zn elements into the Cu substrate can effectively eliminate the interfacial Bi embrittlement of the SnBi/Cu–X joints under tensile or fatigue loadings. Compared with the conventional SnAg/Cu joints, the SnBi/Cu–X joints exhibit higher adhesive strength and comparable fatigue resistance. Finally, the fatigue and fracture mechanisms of the SnBi/Cu–X solder joints were discussed qualitatively. The current findings may pave the new way for the Sn–Bi solder widely used in the electronic interconnection in the future.

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8

Valantin, Chloé, Florian Lacroix, Marie-Pierre Deffarges, Julie Morcel, and Nourredine Aït Hocine. "Interfacial damage on fatigue-loaded textile-rubber composites." Journal of Applied Polymer Science 132, no. 4 (August 28, 2014): n/a. http://dx.doi.org/10.1002/app.41346.

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9

Huang, Jow-Lay, and Jyh-Ming Jih. "Investigation of SiC–AlN: Part III. Static and dynamic fatigue." Journal of Materials Research 10, no. 10 (October 1995): 2488–93. http://dx.doi.org/10.1557/jmr.1995.2488.

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SiC/AlN composites with controlled interfacial solid solution were employed in this present work to investigate the effects of interfacial chemical composition and AlN polytypes on the fatigue properties. The dynamic strength of the SiC/AlN composite was found to decrease initially as the stressing rate decreased. However, the strength increased with a decrease in stress rate at a low stress rate region of below 0.01 MPa/s. Crack arrest could have occurred before exhibiting spontaneous failure at an intermediate stress rate of 0.01 MPa/s. It was found that both the interfacial bonding strength and testing technique had essential effects on the behavior of slow crack growth.

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10

Chiu, Hsien-Tang, Yung-Lung Liu, Kuo-Chuan Liang, and Peir-An Tsai. "Interfacial properties and fatigue behavior of carbon fiber epoxy laminate composites." Journal of Polymer Engineering 33, no. 2 (April 1, 2013): 173–79. http://dx.doi.org/10.1515/polyeng-2012-0113.

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Abstract The study elucidated the relationship between the stacking sequence and physical properties, by investigating mechanical properties, fatigue life and the morphology, after fatigue fracture of carbon fiber/epoxy composites. The results show that the unidirectional carbon fiber laminate has the maximum tensile stress. Moreover, the laminate with ±45° plies can improve the tensile strain. The fatigue life of all specimens was shorter than 103 cycles under high cyclic stress level, and longer than 106 cycles under low cyclic stress level. Laminates with [908]s stacking sequence had the shortest fatigue life under high and low cyclic stress, while the unidirectional carbon fiber laminate had the highest fatigue life. A number of fatigue damage models, including delaminating, matrix cracking and fiber failure, have been identified by scanning electron microscopy (SEM). The SEM micrographs showed that the morphology on the cross section, after fatigue fracture, was significantly correlated to the stacking sequence.

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11

Ohgi, Jun Ji, S. Tanaka, T. Kuramoto, M. Suzuki, and Koichi Goda. "Stress-Strain Response in SiC/SiC Composites under Cyclic Loading." Key Engineering Materials 353-358 (September 2007): 1406–9. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1406.

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The tension-tension fatigue tests for SiC/SiC composites were performed under the conditions that the maximum load Pmax was 80-90% to the fracture load of the tensile tests and the stress ratio was Rσ = 0.5. The composites exhibited a width in stress-strain hysteresis loop under one load cycling. In some cases the mean strain εmean gradually increase with increasing in number of cycles. These variations would reflect the developments of the fatigue damage at the fiber/matrix interface during the cyclic loading process. The pull-out lengths of the fibers for the fatigued- and not fatigued-specimens were measured through the SEM observations after the tensile test. In all materials, the average pull-out length of fibers in fatigued material was larger than in not fatigued material because the cyclic loading affected on the fiber/matrix interfacial strength.

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12

Yu, Qian-Qian, and Yu-Fei Wu. "Fatigue behaviour of cracked steel beams retrofitted with carbon fibre–reinforced polymer laminates." Advances in Structural Engineering 21, no. 8 (September 18, 2017): 1148–61. http://dx.doi.org/10.1177/1369433217729518.

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In recent years, externally bonded carbon fibre–reinforced polymer has been considered an innovative way to strengthen steel structures attributed to its high strength-to-weight ratio, excellent corrosion resistance and fatigue performance. This article presents an experimental and numerical study on the fatigue behaviour of defected steel beams strengthened with carbon fibre–reinforced polymer laminates, with a special focus on the effect of interfacial debonding. Analytical modelling and numerical simulation confirmed that the interfacial debonding had a pronounced effect on carbon fibre–reinforced polymer strain and stress intensity factor at the crack front. After introducing interfacial debonding from experimental findings into the numerical analysis, the fatigue life and crack propagation versus cycle numbers of the specimens compared well with the test results. Based on the current experimental program, specimens with Sikadur 30 were more prone to debonding failure; therefore, Araldite 420 is suggested for strengthening schemes.

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13

Ouchi, H., A. Tsujimoto, K. Nojiri, K. Hirai, T. Takamizawa, WW Barkmeier, MA Latta, and M. Miyazaki. "Effect of Oxygen Inhibition Layer of Universal Adhesives on Enamel Bond Fatigue Durability and Interfacial Characteristics With Different Etching Modes." Operative Dentistry 42, no. 6 (November 1, 2017): 636–45. http://dx.doi.org/10.2341/16-255-l.

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SUMMARY Objective: The purpose of this study was to evaluate the effect of the oxygen inhibition layer of universal adhesive on enamel bond fatigue durability and interfacial characteristics with different etching modes. Methods: The three universal adhesives used were Scotchbond Universal Adhesive (3M ESPE, St Paul, MN, USA), Adhese Universal (Ivoclar Vivadent, Schaan, Lichtenstein), and G-Premio Bond (GC, Tokyo, Japan). The initial shear bond strength and shear fatigue strength to enamel was determined in the presence and absence of the oxygen inhibition layer, with and without phosphoric acid pre-etching. The water contact angle was also measured in all groups using the sessile drop method. Results: The enamel bonding specimens with an oxygen inhibition layer showed significantly higher (p<0.05) initial shear bond strengths and shear fatigue strengths than those without, regardless of the adhesive type and etching mode. Moreover, the water contact angles on the specimens with an oxygen inhibition layer were significantly lower (p<0.05) than on those without, regardless of etching mode. Conclusion: The results of this study suggest that the oxygen inhibition layer of universal adhesives significantly increases the enamel bond fatigue durability and greatly changes interfacial characteristics, suggesting that the bond fatigue durability and interfacial characteristics of these adhesives strongly rely on its presence.

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14

Van Truong, Do, Vuong Van Thanh, Hiroyuki Hirakata, and Takayuki Kitamura. "Interfacial fatigue fracture criterion of bimaterial in submicron scale." Microelectronic Engineering 140 (June 2015): 23–28. http://dx.doi.org/10.1016/j.mee.2015.05.005.

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15

SHI, Z., and R. ZHANG. "Numerical simulation of interfacial crack growth under fatigue load." Fatigue & Fracture of Engineering Materials & Structures 32, no. 1 (January 2009): 26–32. http://dx.doi.org/10.1111/j.1460-2695.2008.01311.x.

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16

Utzinger, J., and P. Steinmann. "Interfacial Fatigue Modelling of Ultrasonic Metal Welded Tensile Specimens." PAMM 8, no. 1 (December 2008): 10245–46. http://dx.doi.org/10.1002/pamm.200810245.

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17

Shipsha, Burman, and Zenkert. "Interfacial fatigue crack growth in foam core sandwich structures." Fatigue & Fracture of Engineering Materials & Structures 22, no. 2 (February 1999): 123–31. http://dx.doi.org/10.1046/j.1460-2695.1999.00148.x.

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18

Sharma, S. C., H. N. Narasimha Murthy, and M. Krishna. "Interfacial Studies in Fatigue Behavior of Polyurethane Sandwich Structures." Journal of Reinforced Plastics and Composites 23, no. 8 (May 2004): 893–903. http://dx.doi.org/10.1177/0731684404033958.

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19

Walls, D. P., and F. W. Zok. "Interfacial fatigue in a fiber reinforced metal matrix composite." Acta Metallurgica et Materialia 42, no. 8 (August 1994): 2675–81. http://dx.doi.org/10.1016/0956-7151(94)90208-9.

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20

Yanhua, Chen, and Shi Zhifei. "An Investigation of Interfacial Fatigue in Fiber Reinforced Composites." Applied Composite Materials 12, no. 5 (September 2005): 265–76. http://dx.doi.org/10.1007/s10443-004-4556-3.

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21

Carvalho, N. J. M., A. J. Huis in 't Veld, and J. Th De Hosson. "Interfacial fatigue stress in PVD TiN coated tool steels under rolling contact fatigue conditions." Surface and Coatings Technology 105, no. 1-2 (June 1998): 109–16. http://dx.doi.org/10.1016/s0257-8972(98)00466-6.

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22

Liu, Xiaoyi, Jin Cai, and Sheng-Nian Luo. "Interfacial anti-fatigue effect in graphene–copper nanolayered composites under cyclic shear loading." Physical Chemistry Chemical Physics 20, no. 11 (2018): 7875–84. http://dx.doi.org/10.1039/c8cp00127h.

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23

Sakane, Masao, Kazuhiro Itoh, Yutaka Tsukada, and Kenji Terada. "Crack Propagation Behavior at Sn37Pb-Copper Interface in Low Cycle Fatigue." Key Engineering Materials 353-358 (September 2007): 2962–65. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2962.

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This paper studies the crack propagation at Sn37Pb-copper interface in push-pull low cycle fatigue. Bonded specimens of Sn37Pb and copper having notch holes with different distances from the interface were fatigued at 313K and the crack propagation paths were observed. Cracks propagated at the interface when the notch hole was near the interface but propagated in the solder when the notch hole was away from the interface. The propagation rate of the interfacial crack was faster than that of non-interface crack. The crack path and crack propagation rate of the two types of cracks were discussed in relation to J integral range calculated by finite element method.

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24

Xie, Jian He, Pei Yan Huang, Feng Liu, and Yong Chang Guo. "Propagation Behavior of Interfacial Fatigue Cracks in RC Beams Strengthened with Pre-Stressed FRP." Key Engineering Materials 462-463 (January 2011): 177–82. http://dx.doi.org/10.4028/www.scientific.net/kem.462-463.177.

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Debonding failure mode usually occurs in the concrete structure flexural strengthened with fiber reinforced polymer (FRP) under cyclic loading. This paper presents an experimental investigation into the fatigue behavior of the FRP-concrete interface of reinforced concrete (RC) beams strengthened with prestressed FRP. 8 small-scale beams were tested under three-point bending cyclic loading. The propagation behavior of the fatigue interface cracks is addressed, and curves showing the growth law of interface cracks are presented. Results from these tests show that the propagation process of interface cracks had three stages, including rapid, stable and unstable growth. The stable propagation phase experienced the most part of the whole test, and the failure mode of all failed beams was debonding following the fatigue fracture of the tensile steel bars. In addition, the influence of FRP prestressing level on the fatigue lives of strengthened beams is discussed, and an empirical formula is developed to predict the fatigue lives of such members. The results show that the fatigue life increases with the prestressed level of FRP. This study provides an insight on the potential long-term performance of FRP-strengthened beams submitted to fatigue loading conditions.

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25

Bao, Jun, and Jian Li. "The Effect of Surface Treatment on the Mechanical Properties of Glass Fiber Reinforced Polyamide 6 Composite." Applied Mechanics and Materials 66-68 (July 2011): 866–69. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.866.

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The effect of fiber surface modification on the fatigue strength of a glass fiber reinforced polyamide-6 has been investigated. Tension axial fatigue tests were conducted with specimens extracted from injection moulded plates. Results show the variation of the fatigue strength as a function of the fiber concentration. The experimental data, the tensile tests have shown the effective improvement of interfacial adhesion between the fiber surface and the matrix.

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26

Han, Zhongying, and Xiaoguang Huang. "GA-BP in Thermal Fatigue Failure Prediction of Microelectronic Chips." Electronics 8, no. 5 (May 14, 2019): 542. http://dx.doi.org/10.3390/electronics8050542.

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A thermal fatigue life prediction model of microelectronic chips based on thermal fatigue tests and solder/substrate interfacial singularity analysis from finite element method (FEM) analysis is established in this paper. To save the calculation of interfacial singular parameters of new chips for life prediction, and improve the accuracy of prediction results in actual applications, a hybrid genetic algorithm–artificial neural network (GA–ANN) strategy is utilized. The proposed algorithm combines the local searching ability of the gradient-based back propagation (BP) strategy with the global searching ability of a genetic algorithm. A series of combinations of the dimensions and thermal mechanical properties of the solder and the corresponding singularity parameters at the failure interface are used to train the proposed GA-BP network. The results of the network, together with the established life prediction model, are used to predict the thermal fatigue lives of new chips. The comparison between the network results and thermal fatigue lives recorded in experiments shows that the GA-BP strategy is a successful prediction technique.

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27

Liu, Ming, K. Jimmy Hsia, and Jian-Ku Shang. "Driving Forces for Interfacial Fatigue Crack Growth by Piezoelectric Actuator." Journal of Intelligent Material Systems and Structures 16, no. 7-8 (July 2005): 557–66. http://dx.doi.org/10.1177/1045389x05051632.

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28

Haque, M. A., A. V. Desai, and M. El Gindy. "Driver-vehicle interfacial dynamics: a robust cue for driver fatigue." International Journal of Heavy Vehicle Systems 18, no. 3 (2011): 245. http://dx.doi.org/10.1504/ijhvs.2011.041589.

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29

Okazaki, M., M. Okamoto, and Y. Harada. "Interfacial fatigue crack propagation in Ni-base superalloy protective coatings." Fatigue & Fracture of Engineering Materials & Structures 24, no. 12 (December 4, 2001): 855–65. http://dx.doi.org/10.1046/j.1460-2695.2001.00452.x.

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30

Zheng, Jiantao, Gregory Ostrowicki, and Suresh K. Sitaraman. "Cyclic Magnetic Actuation for Potential Characterization of Interfacial Fatigue Fracture." IEEE Transactions on Components and Packaging Technologies 33, no. 3 (September 2010): 648–54. http://dx.doi.org/10.1109/tcapt.2010.2058113.

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31

Maligno, A. R., D. Whalley, and V. V. Silberschmidt. "Interfacial failure under thermal fatigue loading in multilayered MEMS structures." IOP Conference Series: Materials Science and Engineering 10 (June 1, 2010): 012087. http://dx.doi.org/10.1088/1757-899x/10/1/012087.

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32

FUKUDA, Kunihisa, and Shijie ZHU. "2010 Interfacial Damage in Thermal Barrier Coatings during Indentation Fatigue." Proceedings of the JSME annual meeting 2007.1 (2007): 71–72. http://dx.doi.org/10.1299/jsmemecjo.2007.1.0_71.

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33

ZHU, Shijie, Kunihisa FUKUDA, and Yuuki NAGAYOSHI. "324 Interfacial Damage in Thermal Barrier Coatings during Indentation Fatigue." Proceedings of the Materials and processing conference 2006.14 (2006): 191–92. http://dx.doi.org/10.1299/jsmemp.2006.14.191.

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34

Skordaris, Georgios, Tilemachos Kotsanis, Apostolos Boumpakis, and Fani Stergioudi. "Improvement of the Interfacial Fatigue Strength and Milling Behavior of Diamond Coated Tools via Appropriate Annealing." Coatings 10, no. 9 (August 25, 2020): 821. http://dx.doi.org/10.3390/coatings10090821.

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This article deals with the potential to reduce the amount of the residual stresses in the diamond films on cemented carbide inserts for improving their effective interfacial fatigue strength and thus their wear resistance. In this context, nano-crystalline diamond coatings (NCD) were deposited on cemented carbide inserts. A portion of these coated tools were annealed in vacuum for decreasing the amount of residual stresses in the film structure. The annealing temperature was appropriately selected for keeping the substrate strength properties invariable after the coating annealing. Inclined impact tests at ambient temperature on the untreated and heat-treated diamond coated tools were conducted for evaluating their effective interfacial fatigue strength. Depending upon the impact load, after a certain number of impacts, damages in the film-substrate interface develop, resulting in coating detachment and lifting. Via appropriate FEM (Finite Element Method)-evaluation of the impact imprints, the residual stresses in the diamond film structure were determined. Milling experiments were conducted for evaluating the cutting performance of the coated tools using aluminum foam as workpiece material. A correlation between the interfacial fatigue strength of diamond coatings and their residual stresses affected by annealings contributed to the explanation of the attained cutting results.

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35

Wang, Puquan, Daolun Chen, Yang Ran, Yunqi Yan, He Peng, and Xianquan Jiang. "Fracture Characteristics and Analysis in Dissimilar Cu-Al Alloy Joints Formed via Electromagnetic Pulse Welding." Materials 12, no. 20 (October 15, 2019): 3368. http://dx.doi.org/10.3390/ma12203368.

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The aim of this study was to identify and analyze the fatigue fracture characteristics of dissimilar Al 6061 to Cu (UNS C11000) lap joints made with ultrafast electromagnetic pulse welding (EMPW) via fractography, stress analysis and finite element simulation. It was observed that EMPW generated an annular (or ring-shaped) bonding area, with weld zones and a central non-weld zone when viewed from the cross section. Two types of failure modes occurred in relation to the cyclic loading levels: base metal fracture or transverse through-thickness (TTT) crack growth at a higher loading level, and joint interfacial failure at a lower loading level. In the interfacial failure, fatigue crack initiated from the outer edge of annular welding area, and propagated to form an approximate elliptical boundary. Fatigue crack propagation was characterized by fatigue striations existing in discrete areas on the fracture surface. This was attributed to a coupled role of shear and normal stresses present in a tensile lap shear sample due to the bending moment caused by the inherent misalignment. The final rapid fracture started from elliptical boundary with elongated shear dimples. Both theoretical stress analysis and finite element model revealed the maximum stress and stress concentration along the outer edge, where fatigue crack initiation occurred.

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36

Bartsch, Marion, Bernd Baufeld, S. Dalkilic, Iulian Mircea, K. Lambrinou, T. Leist, J. Yan, and Anette M. Karlsson. "Time-Economic Lifetime Assessment for High Performance Thermal Barrier Coating Systems." Key Engineering Materials 333 (March 2007): 147–54. http://dx.doi.org/10.4028/www.scientific.net/kem.333.147.

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Strategies for time-economic lifetime assessment of thermal barrier coatings (TBC) in service are described and discussed on the basis of experimental results, achieved on material systems with coatings applied by electron beam physical vapour deposition. Service cycles for gas turbine blades have been simulated on specimens in thermo-mechanical fatigue tests, accelerating the fatigue processes by an increase of load frequency. Time dependent changes in the material system were imposed by a separate ageing, where the samples were pre-oxidized prior to the fatigue test. Results of thermo-mechanical fatigue tests on pre-aged and as-coated specimens gave evidence of interaction between fatigue and ageing processes. An alternative approach is used, which is focused on the evolution of a failure relevant damage parameter in the TBC system. The interfacial fracture toughness was selected as a damage parameter, since one important failure mode of TBCs is the spallation near the interface between the metal and the ceramic. Fracture mechanical experiments based on indentation methods have been evaluated for monitoring the evolution of the interfacial fracture toughness as a function of ageing time. It was found that the test results were influenced by both changes of the interface (which is critical in service) and changes in the surrounding material.

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37

TOKAJI, Keiro, Takeshi OGAWA, Hirohisa SHIOTA, Satoshi TAKAKI, Takahiro SHIMIZU, and Shuji YUMITORI. "Fatigue. Effects of Interfacial Strength on Tensile and Fatigue Properties of Long Glass Fibre-Reinforced Polypropylene." Journal of the Society of Materials Science, Japan 46, no. 10 (1997): 1204–9. http://dx.doi.org/10.2472/jsms.46.1204.

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38

Jen, Yi-Ming, and Chia-Wei Chang. "Combined Temperature and Moisture Effect on the Monotonic and Fatigue Strengths of Sandwich Beams with Glass-Polypropylene Faces and Aluminum Foam Cores." Polymers and Polymer Composites 26, no. 1 (January 2018): 69–78. http://dx.doi.org/10.1177/096739111802600108.

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Recently, the sandwich structures with thermoplastic faces and metal foam cores have been received much attention in the automobile, aerospace and naval industries. Since the material properties of the polymer-based faces and adhesive films employed in the sandwich structures are sensitive to the temperature and humidity, the knowledge of the environmental effect on the mechanical properties are important to the design and application of such structures. Therefore, the hygrothermal effect on the static and fatigue bending strengths of the sandwich beams with glass-polypropylene faces and aluminum foam cores were experimentally analyzed in the present study. The monotonic and cyclic four-point bending tests were conducted under four environmental conditions, i.e., 25°C/45% RH, 25°C/75% RH, 50°C/45% RH, and 50°C/75% RH, to evaluate the influence of combined temperature and humidity on the strengths against the static and cyclic flexural loads. Experimental results show that the humidity has tiny effect on the static and fatigue strengths when the specimens were tested at fixed temperature. However, the temperature plays an important role in the environmental effect because the monotonic and fatigue strengths of the studied sandwich specimens decrease significantly when the ambient temperature rises from 25 to 50°C. Furthermore, under four considered environmental conditions, two crack systems, the core shear ones and the face/core interfacial ones, were observed both in the monotonic and cyclic tests. The development of interfacial cracks strongly depends on the environmental variables. Accordingly the interfacial cracks play an important role in the static and fatigue strengths of the studied sandwich structures.

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39

Yang, Ban Quan, Guang Nan Chen, Xue Jun Chen, Wei Hai Sun, Hong Qian Chen, Jing Wen Pan, and Ying Chen. "Research on Interfacial Cracking of a Cr Coating/Steel Substrate with and without Laser Pre-Quenching Treatment under Thermal Fatigue Loading." Applied Mechanics and Materials 190-191 (July 2012): 543–46. http://dx.doi.org/10.4028/www.scientific.net/amm.190-191.543.

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The interfacial cracking behaviors of a chromium (Cr) coating/laser pre-quenched steel substrate system and a Cr coating/original steel substrate system under thermal fatigue loading were investigated in this work. The experiment results show that the Cr coating on the pre-quenched substrate surface exhibited a higher resistance of interfacial cracking than that of the Cr coating on the original substrate surface under the same loading condition. This indicates the technology of laser pre-quenching of steel substrate surface prior to plating the Cr coating can improve the interfacial adhesion properties between the coating and substrate.

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Summa, Jannik, and Hans-Georg Herrmann. "Using Quantitative Passive Thermography and Modified Paris-Law for Probabilistic Calculation of the Fatigue Damage Development in a CFRP-Aluminum Hybrid Joint." Polymers 13, no. 3 (January 22, 2021): 349. http://dx.doi.org/10.3390/polym13030349.

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Although metal to Carbon-fiber-reinforced-polymer (CFRP) hybrid-joints possess a high lightweight construction potential, their extensive application has to deal with interfacial stress concentrations promoting fatigue damage. Furthermore, the underlying damage processes and their influencing factors are still not completely understood. Besides interfacial property-gradients, generic shapes counteract a precise determination of local stresses or strains, respectively. Hence, new methods are required that combine non-destructive testing and fracture mechanics to account for the fatigue damage. In this work, data of mechanical fatigue testing of an aluminum-CFRP hybrid-structure is presented by means of the dynamic stiffness and the mechanical hysteresis. Additionally, in situ passive thermography allows for capturing the heat development due to delamination growth. Correlating the obtained data implies that faster delamination growth coincides with higher amplitude values of lock-in thermography and higher mechanical hysteresis. Supported by this observation, a model is formulated to calculate the local dissipation per loading cycle. Further integration into a Paris-law like formulation results in a calculation model to account for the mode-I fatigue delamination growth. Additional validation of the model parameters shows good agreement with the experimental data.

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Zhang, Long, Shuangyin Cao, and Xin Tao. "Experimental Study on Interfacial Bond Behavior between CFRP Sheets and Steel Plates under Fatigue Loading." Materials 12, no. 3 (January 25, 2019): 377. http://dx.doi.org/10.3390/ma12030377.

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Using carbon fiber reinforced polymer (CFRP) composites for enhancing the fatigue behavior of the steel structures will be an important application. As the most critical part, the fatigue behavior of the CFRP-to-steel bonded interface directly determines the strengthening effect of steel structures reinforced by CFRP. In this paper, a series of CFRP-to-steel double-shear specimens are performed in order to study the interfacial bond behavior between CFRP and steel under fatigue loading. Two parameters are considered: the upper bound value and the lower bound value of the fatigue loading. An analysis of test results indicates that the crack development rate increases with the increment of the stress ratio or stress level and the crack development process includes two phases: crack stable development phase and debonding failure phase. A calculation model is put forward to describe the relationship between the crack development rate and the stress level. Besides, it can be obtained from the test results that the fatigue lives of the specimens decrease with the increment of the stress level. The empirical formula of S-N curve based on the form of single logarithm formula is proposed and the fatigue limit under the experimental conditions in this paper is determined to be 0.343 by computational analysis.

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Kook, S. Y., J. M. Snodgrass, A. Kirtikar, and R. H. Dauskardt. "Adhesion and Reliability of Polymer/Inorganic Interfaces." Journal of Electronic Packaging 120, no. 4 (December 1, 1998): 328–35. http://dx.doi.org/10.1115/1.2792642.

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The reliability of microelectronic components is profoundly influenced by the interfacial fracture resistance (adhesion) and associated progressive debonding behavior. In this study we examine the interfacial fracture properties of representative polymer interfaces commonly found in microelectronic applications. Specifically, interface fracture mechanics techniques are described to characterize adhesion and progressive bebonding behavior of a polymer/metal interface under monotonic and cyclic fatigue loading conditions. Cyclic fatigue debond-growth rates were measured from ~10−11 to 10−6 m/cycle and found to display a power–law dependence on the applied strain energy release rate range, ΔG. Fracture toughness test results show that the interfaces typically exhibit resistance-curve behavior, with a plateau interface fracture resistance, Gss, strongly dependent on the interface morphology and the thickness of the polymer layer. The effect of a chemical adhesion promoter on the fracture energy of a polymer/silicon interface was also characterized. Micromechanisms controlling interfacial adhesion and progressive debonding are discussed in terms of the prevailing deformation mechanisms and related to interface structure and morphology.

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Wu, Bing, Boyang An, Zefeng Wen, Wenjian Wang, and Tao Wu. "Wheel–rail low adhesion issues and its effect on wheel–rail material damage at high speed under different interfacial contaminations." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 15 (April 11, 2019): 5477–90. http://dx.doi.org/10.1177/0954406219842285.

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The objective of this paper is to ascertain the wheel–rail low adhesion mechanism using a high-speed wheel–rail rolling contact test rig under different interfacial contaminations. Based on the experimental results, a numerical method was proposed to investigate the wheel–rail wear and rolling contact fatigue due to low adhesion issues. The experimental results indicated that the wheel–rail low adhesion phenomena can happen under interfacial liquid contaminations, especially at high-speed running condition. Preliminary numerical investigations showed that the low adhesion condition can easily lead to sliding hence serious wear, especially at the speed between 160 km/h and 200 km/h. The temperature rise within the contact patch can be significantly more severe once wheel and rail are in full slip, causing rolling contact fatigue due to material softening.

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Scheerlinck, T., J. Broos, D. Janssen, and N. Verdonschot. "Mechanical implications of interfacial defects between femoral hip implants and cement: A finite element analysis of interfacial gaps and interfacial porosity." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 222, no. 7 (October 1, 2008): 1037–47. http://dx.doi.org/10.1243/09544119jeim362.

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Two types of defect between femoral hip implants and cement have been identified. Interfacial porosity arises from cement shrinkage during curing and presents as pores randomly located along the stem. Interfacial gaps are much larger stem—cement separations caused by air introduced during stem insertion. To investigate the mechanical consequences of both types of defect, a finite element analysis model was created on the basis of a computed tomography image of a Charnley—Kerboul stem, and alternating torsional and transverse loads were applied. The propagation of fatigue cracks within the cement and the rotational stability of the stem were assessed in models simulating increasing amounts of interfacial gaps and pores. Anterior gaps covering at least 30 per cent of the implant surface promoted cement cracks and destabilized the stem. Anterolateral gaps were less destabilizing, but had more potential to promote cracks. In both cases, cracks occurred mainly outside gap regions, in areas where the stem contacted the cement during cyclic loading. Although random interfacial pores did not destabilize the implant, they acted as crack initiators even at low fractions (10 per cent). In conclusion, random interfacial pores were more harmful for the cement mantle integrity than were larger regions of interfacial gaps, although gaps were more detrimental for the rotational stability of the stem.

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Dubourg, M. C., M. Godet, and B. Villechaise. "Analysis of Multiple Fatigue Cracks—Part II: Results." Journal of Tribology 114, no. 3 (July 1, 1992): 462–68. http://dx.doi.org/10.1115/1.2920906.

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A semianalytical model of multiple fatigue crack analysis in sliding contact is developed. Linear elastic fracture mechanics is applied. Frictional resistance between crack faces is taken into account. Five crack interaction mechanisms have been identified. Load transfer between cracks can cause both significant increases and drops in stress intensity factors both in mode I and II. The interaction depends on the distance between cracks, their relative position with respect to the loading zone, and the interfacial crack coefficient of friction.

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Deng, Jiangdong, Airong Liu, Zhongguo John Ma, Peiyan Huang, and Rui Zhou. "Interfacial Behavior of RC Beams Strengthened with FRP under Fatigue Loading." Advances in Structural Engineering 18, no. 2 (February 2015): 283–93. http://dx.doi.org/10.1260/1369-4332.18.2.283.

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Wan, Sijie, Feiyu Xu, Lei Jiang, and Qunfeng Cheng. "Superior Fatigue Resistant Bioinspired Graphene-Based Nanocomposite via Synergistic Interfacial Interactions." Advanced Functional Materials 27, no. 10 (January 27, 2017): 1605636. http://dx.doi.org/10.1002/adfm.201605636.

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SHI, Z. F., and L. M. ZHOU. "Interfacial damage in fibre-reinforced composites subjected to tension fatigue loading." Fatigue & Fracture of Engineering Materials & Structures 25, no. 5 (May 2002): 445–57. http://dx.doi.org/10.1046/j.1460-2695.2002.00516.x.

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Shi, Zhifei, and Linnan Zhang. "Simulation of interfacial fatigue of reinforced concrete under different loading cases." Modelling and Simulation in Materials Science and Engineering 12, no. 4 (May 21, 2004): 561–73. http://dx.doi.org/10.1088/0965-0393/12/4/001.

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Hung, Jui‐Pin, James Shih‐Shyn Wu, and Jian‐Horng Chen. "Effects of interfacial debonding on fatigue damage of cemented hip prostheses." Journal of the Chinese Institute of Engineers 26, no. 6 (September 2003): 791–801. http://dx.doi.org/10.1080/02533839.2003.9670833.

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