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Effect of Thread Helix Angle on the Axial Metal Flow of Cross Wedge Rolling Thread Shaft Huajun Yan1,a, Lijuan Wang1,b, Yuzhong Liu1, Guochang Li2, Jinping Liu3, Zhenghuan Hu3 1School of Materials Science and Engineering, Hebei University of Science and Technology, Hebei Key Laboratory of Material Near-net Forming Technology , Shijiazhuang 050018, China 2School of Management and Economics, Hebei University of Science and Technology, Shijiazhuang 050018, China 3School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 10083, China ayanhj22@163.com, bkdwlj@163.com Keywords: Cross wedge rolling, Thread shafts, Helix angle, Metal flow Abstract.
[2] Zongji Wang: Rolling process of thread, Manufacture and Materials, Vol.39 (Issue 3) (2002), p. 33
School of Materials Science and Engineering, (2007)
Journal of University of Science and Technology Beijing, Vol.34 (Issue 6) (2012), p. 701
[7] Huajun Yan, Jinping Liu, Zhenghuan Hu, et al: Effects of process parameters on forming helical tooth shaft in cross wedge rolling.Journal of Central South University (Science and Technology), Vol.43 (Issue 6) (2012), p. 2114.

Citation & Copyright (to be inserted by the publisher) Nondestructive Evaluation of Internal Defects for Composite Materials by using Shearography Sang-Woo Choi1 and Joon-Hyun Lee 2 1 Research Institute of Mechanical Technology, Pusan National University, Pusan 609-735, Korea 2 School of Mechanical Engineering, Pusan National Univeristy, Pusan 609-735, Korea Keywords: Shearography, Nondestructive Evaluation, ESPI(Electronic Speckle Pattern Interferometry), Optical Measuring Techniques, Composite Materials Abstract.
Composite materials, such as FRP and honeycomb structures, are used for crucial structures in aircraft.
In this study, a nondestructive shearography was applied to detect and characterize internal defects of composite materials for both CFRP laminates and honeycomb structure.
Therefore, some conventional nondestructive techniques, such as ultrasonics, acoustic emission, and eddy current, have been applied in evaluating delamination or debonding in composite materials.
Hung : Journal of Nondestructive Evaluation Vol. 8 (1989), No. 2, p. 55-67

A lotus type-porous copper will be used to substitute wick materials from tabulate coral capillary for heat pipe applications.
In addition, there are recently several studies on the use of other materials as the capillary wick material for heat pipe applications.
Here are some conclusions about the materials and process parameters for used in subsequent studies to optimize the process. 1.
Hamid, "Thermal performance of biomaterial wick loop heat pipes with water-base Al2O3 nanofluids," International Journal of Thermal Sciences, vol. 76, pp. 128-136, 2// 2014
Nakajima, "Fabrication, properties and application of porous metals with directional pores," Progress in Materials Science, vol. 52, pp. 1091-1173, 9// 2007.

Introduction The search for sustainable and environmentally friendly construction materials is imperative in concrete materials.
These materials are often used in concrete, and the alkaline compounds may affect the pH during the carbonation process.
"DURABILITY ENHANCEMENT OF SCC WITH WASTE GLASS POWDER" , Materials Research, 2016
"Use of waste glass powder toward more sustainable geopolymer 6 1% 7 1% 8 1% 9 1% 10 1% 11 1% concrete”, Journal of Materials Research and Technology, 2023 [5] Reem Sabouni, Hassan Raad Abdulhameed."
Advances in Materials Science and Engineering, 2021, 1–9. https://doi.org/10.1155/2021/3632991.

Material of the Bone Plate.
In order to evaluate the bone plates, bending strength and rigidity should be determined as respect to the standard of ISO (International Organization for Standardization) and ASTM (American Society of Testing Materials).
Ramakrishara, “Strain Distribution Analysis of braided Composite Bone Plates,” Composite Science and Technology, vol. 63, No. 11, 2003, pp. 427-435
[3] Ju Ho Kim, Seung Hwan Chang, “A Basic Design and Characterization on Composite Bone Plate for Bone Fracture Healing,” Journal of The Korean Society for Composite Materials, vol. 20, 2007, pp. 7-12
(Journal of Korean Orthopaedic Association), vol. 24, 1989, pp. 811-816

Qu 1, c 1 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, P.R.
The reinforcement materials were α-Si3N4 whiskers with average length of 20µm.
Frazier and R.Srinivasan: Materials Science and Engineering Vol.
Wang: Key Engineering Materials Vol. 249 (2003) 239 [7] A.
Yao: Journal of Material Processing technology (revised) [8] Mamoru Mabuchi and Kenji Higashi: International Journal of Plasticity Vol. 17 (2001), p. 399 [9] M.

Multilayer ceramic materials testing under the terms of high heating-cooling gradients Sorin Dimitriu1, a, Victor Manoliu2, b*, Gheorghe Ionescu2, c , Adriana Stefan2, d 1University POLITEHNICA of Bucharest, Faculty of Materials Science and Engineering, 313 Splaiul Independentei, Sector 6, 060042 Bucharest, Romania 2National Institute for Aerospace Research „Elie Carafoli” – INCAS, 220 Iuliu Maniu Blvd., Sector 6, 061126 Bucharest, Romania asorin.dimitriu@ccib.ro, b*manoliu.victor@incas.ro, cionescu.gheorghe@incas.ro, dstefan.adriana@incas.ro Keywords: multilayer, ceramic, quick thermal shock, thermal expansion.
From the ensemble of wear factors acting simultaneously on the multilayer ceramic materials, associated to the coatings structures, the quick thermal shock acts most disruptive.
The furnace size permits the heating of a specimen with size of 2÷3 mm x 30 mm x 50 mm in a very short time, the time depending on the types and thickness of the used materials for a TBC protection (support material, bond coat, intermediate coat and top coat).
Types of materials used: triplex layers; metallic support (S) - Nimonic 90; bond coat (BC) – MeCrAlY; intermediary layer (I) - ZrO2• Y2O3 + Co; top coat(TC) ZrO2• 8%Y2O3.
[5] A.Bolcavage, A.Feuresteln, J.Foster, P.Moore, Thermal Shock Testing of thermal barrier Coating, Journal of Materials Engineering and Performance. 13 (2004), pp. 389-397

Experimental Study on Sulfuric Acid Leaching Behavior of Chromite with Different Temperature Chengjun Liua, Jie Qib and Maofa Jiangc School of Materials and Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China aliucj@smm.neu.edu.cn, bqjjj5633@126.com, cjiangmf@smm.neu.edu.cn Keywords: Chromite, Sulfuric acid, Leaching, Reaction temperature.
Experimental Method Experimental materials.
Pan: Journal of Hazardous Materials, Vol. 149 (2007), P. 440-447 [4] Y.
Jiang: Journal of Ecotechnology Research, Vol.12(2006), P. 177-180
Liu: Journal of the Chinese rare earth society, Vol. 20(2002), P. 472-474 (In Chinese) [8] P.Y.

This is called time-temperature superposition of viscoelastic material.
As the master curves can fully describe mechanical properties of materials with considering the combined influence of temperature and loading frequency, by which performance evaluation and distress prediction of asphalt pavement can be conducted.
Acknowledgements This work was financially supported by the Shandong Natural Science Foundation (Grant No.
McDaniel and Jan Olek: Development of a Laboratory Procedure to Evaluate the Influence of Aggregate Type and Mixture Proportions on the Frictional Characteristics of Flexible Pavements, AAPT, (2008) [5] Wu Wenliang, Zhang Xiaoning, Li Zhi: Journal of South China University of Technology (Natural Science Edition).
Dwaikat: Journal of Transportation Engineering, Vol. 135, No. 12 (2009), p. 974 [8] Ou Yangwei, Gu Wei and Wang Lianguang: Journal of Northeastern University (Natural Science), Vol. 30 (2009), p.593 [9] AASHTO Designation: Refining the Simple Performance Tester for Use in Routine Practice.

By the compact of increase of fine materials, the zone which is 0.4m below the surface, capillary tunnels for the migration of water and salts established, they are the most important paths for water’s and salt’s migration in soil.
It can be found from the Table 2 that the size of cation exchange capacity of soil during spring and autumn is not directly related to its depth, but be related to the location of the water level changeable area: it is the water level changeable area that provides a multi-phase material exchanged environment and space for the cation exchange, thus it provides sufficient exchanged material sources and transfer channels for the silt and clay material, and offers essential conditions for the further improvement of alteration process of silt and clay particles to the final clay minerals.
Acknowledgement This work is supported by the Natural Science Foundation of China (grant number: 40872170 , 40672180, 40911120044, 41010109) and Basic Scientific Research Project By Jilin University (200903198).
Jin: Journal of Northeast Normal University (Natural Science Edition), Vol. 38 (2006) No.4, p.124 (In Chinese)
Zhang: Resources Science, Vol. 27 (2005) No.3, p.92 (In Chinese).