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This is because composite materials exhibit intrinsic statistical dependence in their mechanical behavior, unlike traditional materials.
PLA-based natural composite materials are environmentally friendly but prone to brittleness.
Materials & Design, Volume: 32(8), 4658-4663
Progress in Materials Science, Volume: 78, 1- 92
Progress in Polymer Science, Volume: 34(9), 982-1021

Experimental Raw materials TBDP containing monocylic monoterpenes over 91.0 % was provided by Suzhou Chemical Synthesis Co., Ltd.
Pd/C catalysts characterization Nitrogen adsorption-desorption isotherm analysis: ASAP-2020 volumetric adsorption analyzer manufactured by the Micromeritics Corporation was used to determine the specific surface area of the materials at liquid nitrogen temperature.
Kou: Journal of Catalysis Vol. 254 (2008), p.244 [25] N.
Renken: Chemical Engineering Science Vol. 57 (16) (2002), p. 3453 [30] H.
Journal of Yantai University (Natural Science and Engineering) (In Chinese) Vol. 12 (1) (1999), p. 50 [33] C.

The evolution of smart structures/materials.
First Euro -pean Conference on Smart Structure and Materials,1992（4）：97-113 [2] Xiaoyan Liu, Wu Yao, Jianping Wu.
Journal of Huazhong University of Science and technology. 2004, (2):47-49,In Chinese
Shanghai building materials,2004,(2):16-18, In Chinese [6] Xian Wu, Xiumei Li, Shuhong Wang, Zhiyang Liu.
Journal of Northeast university,2005, 26(1): 92-295, In Chinese.

The results indicated that the criterions and the sensitization degree of material have a corresponding relationship, and can reflect the change of sensitivity on the low-sensitized materials to intergranular corrosion sensitively and quantitatively.
Journal of Liaoning Institute of Technology(natural science edition), 2007 27(1)
Journal of Nuclear Materials, 392 (2009) 396-404
Journal of Materials Science Letters, 2002 (21):1969
Corrosion Science, 53(2011):1581-1591

Materials and Resources.
The materials that were used in this study are cement, sand, banana stem fibers, corn husk fibers, and citric acid.
To fabricate a cement fiber board sample, all raw materials especially the banana and corn husk fibers were prepared.
Fiber diameters of materials added to cement mixture may affect the mechanical properties of the composites.
Adhikari, "Eco-Friendly Urea-Formaldehyde Composites Based on Corn Husk Cellulose Fibers," International Journal of Composite Materials, vol. 10, no. 2, pp. 29-36, 2020

Sahari, Journal of Materials Design and Applications Vol. 221 (2007), p. 121
Deli, International Journal of Innovative Research in Science, Engineering and Technology Vol. 5 (2016), p.1163
Madi, Materials and Design Vol. 42, (2012), p. 289
Eltai, Materials and Design Vol. 60 (2014), p.556
Sebaey, Materials and Design Vol. 63 (2014), p. 6

In a complex state of stress is the materials of equipment in engineering applications, domestic and overseas researchers have been trying to obtain the material properties of the plastic deformation and ultimate strain under different stress states through a variety of means[3-5].
In order to be close to the authenticity of the materials, the true stress - true strain calculation method was taken.
References [1] Mirone G，Corallo,D: International Journal of Plasticity.
Vol.31-1(2012),p.203-212 [6] He Yunzeng, Zou Guangping: Acta Mechanica Sinica, Vol.33(2001),p.828-833(in Chinese) [7] Zhu Hao, Zhu Liang and CHEN Jianhong: Journal of Materials Science & Engineering.
European Journal of Mechanics A/Solids,Vol.22(2003),p.1-13

Thermo-mechanical Monitoring of Composite Materials during the Pyrolysis of C/C Composites Wielage, Bernhard 1, a , Weber, Daisy1, b , Müller, Tobias1,c , Steger, Heike 1, d 1 Institute of Materials Science and Engineering, University of Technology Chemnitz, Germany a bernhard.wielage@mb.tu-chemnitz.de, b daisy.weber@mb.tu-chemnitz.de, ctobias.mueller@mb.tuchemnitz.de, dheike.steger@mb.tu-chemnitz.de Keywords: C/C Composites, Pyrolysis, Dynamic Mechanical Thermal Analysis.
To describe the mechanical properties of different materials, two extremes are possible.
Now the testing method allows the mechanical characterization of a wide range of different materials.The materials reach from [5, 6, 13]
- elastomers and polymers, - composite materials, - metals, - glasses and ceramics, - biomaterials and materials for the food industry to - adhesives, synthetic plastic materials and - liquids.
Mark: Dynamic-Mechanical Thermal Analysis of AramidSilica Hybrid Composites Prepared in a Sol-Gel Process, Journal of Applied Polymer Science, 63 (1997) 1345-1352 [14] E.

Effect of adding micro amount rare earth element Er on mechanical property of Bi5Sb8Sn solder alloy LI Shuai1,a, YAN Yan-fu1, b, JIU Yong-tao1,c, WANG Hong-na1,d 1College of Material Science and Engineering, He nan University of Science and Technology, Luoyang, China 471003 aemail: lyctlishuai@163.com ,bemail: yanyanfu@mail.haust.edu.cn,cemail: jiuyongtao@163.com, demail: xiaona1986107@126.com Keywords:Bi5Sb8SnRE quaternary alloy; rare earth Er; tensile strength;shear strength Abstract: A new Bi5Sb8SnRE quaternary alloy was formed by adding 0.25wt%-0.75wt% rare earth (RE)Er into Bi5Sb8Sn solder alloy to study the effect of its mechanical property.The results show that adding micro amount of Er could refine the microstructure.Meanwhile,more uniform microstructure,improvements of the mechanical properties were obtained with Er additon.Comparing with Bi5Sb8Sn matrix, the tensile strength and shear strength increased by 41.8% and 83.0% respectively when Er adds up to 0.5wt.%; However
The researches had shown that:the Bi5Sb solder alloy has lower price,better solderability and suitable melting point which is 250～350℃,but the processability and wettability are poor.The preliminary study shows that: A new Bi5SbxSn quaternary alloy was formed by adding different content of Sn,and the spreading area increased by one times than the Bi5Sb matrix soler when the content of Sn is 8wt.%, but the mechanical property remains to be further improved.A new Bi5Sb8SnRE quaternary alloy was formed by adding 0.25wt%-0.75wt% RE Er into Bi5Sb8Sn solder alloy to improve the mechanical property. 2 Experiment procedure 2.1 Solder preparation The compositions of the investigated alloy are shown in Table.1.The pure Bi, Sb, Sn and RE Er with purity of 99.95% were used as raw materials.
References [1] Yoshikazu T,Ikuo O,Ryosuke K: Journal of Electronic Materials Vol.35(2006), P.1926-1932
[3] Y C Liu, J W R Teo, S K Tung and K H Lam: Journal of Alloys and Compounds Vol.448(2008), P.340–343 [4] C H Du,F Chen and Y F Du: Electronic Components and Materials Vol.123(2004), P.34~36 [5] J Glazer: Journal of Eletronic Materials Vol,23 (1994), P.693-697 [6] L F Feng, Y F Yan and X X Guo: Materials Science Froum Vol.610-613(2009), P.537-541

Likewise, particles with intrinsic electric dipole moments or containing polar materials like water will also experience a force.
Collection of Technical Papers - 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference , P 512-520, 2007 [6] Park Y B, Im H, Im M, et al.
Journal of Materials Chemistry, 2011, 21:633–636
Journal of Electrostatics, 2009 (67): 89–92
Journal of Electrostatics, 2010 (68):179-189.