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45 results on '"Al‐Fadhalah, Khaled"'

1. Ball Burnishing Parameters Affecting the Residual Stress of the Zr65Cu15Al10Ni10 Metallic Glass

Author

Bouzayeni, Sami, Gharbi, Fathi, Benameur, Tarek, Al-Fadhalah, Khaled J., Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Chouchane, Mnaouar, editor, Abdennadher, Moez, editor, Aifaoui, Nizar, editor, Bouaziz, Slim, editor, Affi, Zouhaier, editor, Romdhane, Lotfi, editor, and Benamara, Abdelmajid, editor

Published
2024
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2. Effect of Free Volume Activation on the Nanoindentation Behaviors in Zr-Based Bulk Metallic Glass

Author

Bouzayeni, Sami, Gharbi, Fathi, Al-Fadhalah, Khaled J., Benameur, Tarek, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ben Amar, Mounir, editor, Ben Souf, Mohamed Amine, editor, Beyaoui, Moez, editor, Trabelsi, Hassen, editor, Ghorbel, Elhem, editor, Tounsi, Dhouha, editor, and El Mahi, Aberrahim, editor

Published
2024
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24. Metallic proxies remain unsuitable for assessing the mechanics of microwear formation: reply to comment on van Casteren et al . (2018)

Author

van Casteren, Adam, primary, Lucas, Peter W., additional, Strait, David S., additional, Michael, Shaji, additional, Bierwisch, Nick, additional, Schwarzer, Norbert, additional, Al-Fadhalah, Khaled J., additional, Almusallam, Abdulwahab S., additional, Thai, Lidia A., additional, Saji, Sreeja, additional, Shekeban, Ali, additional, and Swain, Michael V., additional

Published
2019
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27. Evidence that metallic proxies are unsuitable for assessing the mechanics of microwear formation and a new theory of the meaning of microwear

Author

van Casteren, Adam, primary, Lucas, Peter W., additional, Strait, David S., additional, Michael, Shaji, additional, Bierwisch, Nick, additional, Schwarzer, Norbert, additional, Al-Fadhalah, Khaled J., additional, Almusallam, Abdulwahab S., additional, Thai, Lidia A., additional, Saji, Sreeja, additional, Shekeban, Ali, additional, and Swain, Michael V., additional

Published
2018
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31. Tooth wear: A response to “Scratching the surface: A critique of Lucas et al. (2013)'s conclusion that phytoliths do not abrade enamel” [J. Hum. Evol. 74 (2014) 130–133]

Author

Lucas, Peter W., primary, Omar, Ridwaan, additional, Al-Fadhalah, Khaled, additional, Almusallam, Abdulwahab S., additional, Henry, Amanda G., additional, Michael, Shaji, additional, Thai, Lidia Arockia, additional, Watzke, Jörg, additional, Strait, David S., additional, van Casteren, Adam, additional, and Atkins, Anthony G., additional

Published
2017
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32. Dental abrasion as a cutting process

Author

Lucas, Peter W., primary, Wagner, Mark, additional, Al-Fadhalah, Khaled, additional, Almusallam, Abdulwahab S., additional, Michael, Shaji, additional, Thai, Lidia A., additional, Strait, David S., additional, Swain, Michael V., additional, van Casteren, Adam, additional, Renno, Waleed M., additional, Shekeban, Ali, additional, Philip, Swapna M., additional, Saji, Sreeja, additional, and Atkins, Anthony G., additional

Published
2016
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33. Effect of Initial Annealing Temperature on Microstructural Development and Microhardness in High‐Purity Copper Processed by High‐Pressure Torsion.

Author

Alhajeri, Saleh N., Almazrouee, Abdulla I., Al‐Fadhalah, Khaled J., and Langdon, Terence G.

Subjects
MICROHARDNESS, COPPER, METAL microstructure
Abstract

The effect of the initial annealing temperature on the evolution of microstructure and microhardness in high purity OFHC Cu is investigated after processing by HPT. Disks of Cu are annealed for 1 h at two different annealing temperatures, 400 and 800 °C, and then processed by HPT at room temperature under a pressure of 6.0 GPa for 1/4, 1/2, 1, 5, and 10 turns. Samples are stored for 6 months after HPT processing to examine the self‐annealing effects. Electron backscattered diffraction (EBSD) measurements are recorded for each disk at three positions: center, mid‐radius, and near edge. Microhardness measurements are also recorded along the diameters of each disk. Both alloys show rapid hardening and then strain softening in the very early stages of straining due to self‐annealing with a clear delay in the onset of softening in the alloy initially annealed at 800 °C. This delay is due to the relatively larger initial grain size compared to the alloy initially annealed at 400 °C. The final microstructures consist of homogeneous fine grains having average sizes of ≈0.28 and ≈0.34 µm for the alloys initially annealed at 400 and 800 °C, respectively. A new model is proposed to describe the behavior of the hardness evolution by HPT in high purity OFHC Cu. [ABSTRACT FROM AUTHOR]

Published
2018
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35. The Feeding Biomechanics and Dietary Ecology ofParanthropus boisei

Author

Smith, Amanda L., primary, Benazzi, Stefano, additional, Ledogar, Justin A., additional, Tamvada, Kelli, additional, Pryor Smith, Leslie C., additional, Weber, Gerhard W., additional, Spencer, Mark A., additional, Lucas, Peter W., additional, Michael, Shaji, additional, Shekeban, Ali, additional, Al-Fadhalah, Khaled, additional, Almusallam, Abdulwahab S., additional, Dechow, Paul C., additional, Grosse, IAN R., additional, Ross, Callum F., additional, Madden, Richard H., additional, Richmond, Brian G., additional, Wright, Barth W., additional, Wang, Qian, additional, Byron, Craig, additional, Slice, Dennis E., additional, Wood, Sarah, additional, Dzialo, Christine, additional, Berthaume, Michael A., additional, van Casteren, Adam, additional, and Strait, David S., additional

Published
2014
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41. The Feeding Biomechanics and Dietary Ecology of P aranthropus boisei.

Author

Smith, Amanda L., Benazzi, Stefano, Ledogar, Justin A., Tamvada, Kelli, Pryor Smith, Leslie C., Weber, Gerhard W., Spencer, Mark A., Lucas, Peter W., Michael, Shaji, Shekeban, Ali, Al‐Fadhalah, Khaled, Almusallam, Abdulwahab S., Dechow, Paul C., Grosse, IAN R., Ross, Callum F., Madden, Richard H., Richmond, Brian G., Wright, Barth W., Wang, Qian, and Byron, Craig

Published
2015
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42. Texture and Grain Boundary Character Distribution in a Thermomechanically Processed OFHC Copper.

Author

Al-Fadhalah, Khaled J.

Subjects
*CRYSTAL growth, *COPPER, *DISLOCATIONS in crystals, *ELECTRON backscattering, *PARTICLES (Nuclear physics), *CRYSTAL grain boundaries
Abstract

The effect of texture on grain boundary character distribution (GBCD) in thermomechanically processed oxygen-free high-conductivity copper has been investigated. Copper samples were cold rolled to a reduction in thickness of 50% and then annealed for 60 min in the range of 400-600°C. GBCD and texture were measured using electron back-scatter diffraction. The fraction of special boundaries (Σ3, Σ9, and Σ27) varied from 59% to 71%, with the maximum in the sample annealed at 500°C. The results indicate that cold rolling provided a strong texture of brass type. It was found that the sample annealed at 500°C have texture components of cube, Goss, rotated-Goss, and Y orientations. These texture components were in relation with the formation of annealing twins and Σ3 boundaries. It was also shown that twin-induced GBCD evolution occurred by strain-induced boundary migration, multiple twinning, and conventional recrystallization. Annealing at 600°C caused full recrystallization and grain growth, showing a strong cube recrystallization texture. The grain growth was found to hinder the formation of special boundaries. [ABSTRACT FROM AUTHOR]

Published
2012
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45. The feeding biomechanics and dietary ecology of Paranthropus boisei.

Author

Smith AL, Benazzi S, Ledogar JA, Tamvada K, Pryor Smith LC, Weber GW, Spencer MA, Lucas PW, Michael S, Shekeban A, Al-Fadhalah K, Almusallam AS, Dechow PC, Grosse IR, Ross CF, Madden RH, Richmond BG, Wright BW, Wang Q, Byron C, Slice DE, Wood S, Dzialo C, Berthaume MA, van Casteren A, and Strait DS

Subjects
Adaptation, Physiological physiology, Animals, Biological Evolution, Biomechanical Phenomena physiology, Bite Force, Eating physiology, Ecology, Finite Element Analysis, Imaging, Three-Dimensional, Mathematics, Models, Biological, Dental Arch anatomy & histology, Dental Arch physiology, Diet, Hominidae anatomy & histology, Hominidae physiology, Skull anatomy & histology, Skull physiology
Abstract

The African Plio-Pleistocene hominins known as australopiths evolved derived craniodental features frequently interpreted as adaptations for feeding on either hard, or compliant/tough foods. Among australopiths, Paranthropus boisei is the most robust form, exhibiting traits traditionally hypothesized to produce high bite forces efficiently and strengthen the face against feeding stresses. However, recent mechanical analyses imply that P. boisei may not have been an efficient producer of bite force and that robust morphology in primates is not necessarily strong. Here we use an engineering method, finite element analysis, to show that the facial skeleton of P. boisei is structurally strong, exhibits a strain pattern different from that in chimpanzees (Pan troglodytes) and Australopithecus africanus, and efficiently produces high bite force. It has been suggested that P. boisei consumed a diet of compliant/tough foods like grass blades and sedge pith. However, the blunt occlusal topography of this and other species suggests that australopiths are adapted to consume hard foods, perhaps including grass and sedge seeds. A consideration of evolutionary trends in morphology relating to feeding mechanics suggests that food processing behaviors in gracile australopiths evidently were disrupted by environmental change, perhaps contributing to the eventual evolution of Homo and Paranthropus., (© 2014 Wiley Periodicals, Inc.)

Published
2015
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