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Materials and methods The materials were synthesized in two steps.
Wessling, Medical applications of membranes: Drug delivery, artificial organs and tissue engineering, Journal of Membrane Science 308 (2008) 1-34
Hayashi, Modification on natural clinoptilolite zeolite for its NH4+ retention capacity, Journal of Hazardous Materials 169 (2009) 29–35
Zhu, Multifunctional NO-delivery vessel derived from aminopropyl-modified mesoporous zeolites, Journal of Colloid and Interface Science 356 (2011) 526–535
Miculescu, Formylated Polysulphone Membranes for Cell Immobilization, Journal of Optoelectronics and Advanced Materials 9 (2007) 3423-3426

The chemical composition of the materials AA6351-T6 and AA5083-H111 is presented in table 1 and 2 respectively and the mechanical properties of the materials in table 3.
Tozaki, T.Ohmune: International Journal of Fatigue, volume 31 (2009), p.1443-1453 [4] P.Cavaliere, E.Cerri, A.Squillace: Journal of Material Science, volume 40(2005), p.3669 [5] T.Saeid, A.
Krishnan: Materials Science and Engineering A, volume 327(2002), p.246 [8] I.
Murugan, Siva Parameswaran: Materials Science and Engineering A, volume 528 (2011) p.5733 [9] J.H.Ouyang R.
Balasubramanian: Material Science and Engineering A, volume 459(2007), p.7 [11] S.J.Vijay, N.Murugan : Materials and Design, volume 31(2010), p.3585

The variation of Poisson’s ratios has very insignificant effect on the stress intensity factor of non-homogeneous materials [[6] F.Delale, F.Erdogan, Interface Crack in a nonhomogeneous elastic Medium, International Journal of Engineering Science. 26 (1988) 559-602. ].
The boundary condition of the crack surface is (3) Crack-Tip Higher Order Asymptotic Field The crack tip stress field would be equipped with the same square root singularity as that of homogeneous materials when the material parameters of different composite materials at the interfaces are continuous[6,[7] Z.
Noda, Crack-tip Singular fields in Nonhomogeneous Materials, Journal of Applied Mechanics. 61 (1994) 738-740. ].
The fields are similar to the famous Williams’ solutions for homogeneous materials.
Acknowledgements The research is supported by the National Natural Science Foundation of China (No.11172332, No.90305023) References

Zhao et al. [5] presented a similar model assuming elastic materials for soft-pad grinding of silicon wafers to simulate the actual contact of the grinding wheel on the work-piece.
Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials.
Most engineering materials show some nonlinear elastic and inelastic behavior under operating conditions that conflict with the assumption of linear elastic fracture mechanics.
The brittle cracking constitutive model provided in Abaqus is applicable to all brittle materials whose compressive and pre-cracking tensile behavior can be represented through linear elasticity, such as ceramics and concrete.
Shin: Journal of Manufacturing Science and Engineering Vol. 129(2) (2006), p. 287–295 [4] T.

Prepare a kind of high toughness EVA modified materials under the premise that retain the original advantages of EVA.
Preparation of Modified Material.
References [1] Gang Yang, Qicheng Li, Yaming Li, Wei Lu, Liping Xu, Yuanxin Wang: Chinese Journal of Colloid & polymer, 2009, 03: 45-46
[4] Zhengzhou Wang, Chuanmei Jiao, Keliang Hu: Polymer Materials Science and Engineering, 2009, 09: 76-78
[7] Min Zhang, Ruolin Zhang, Baofeng Zhang, Limin Gu, Jianhui Qiu: Journal of Shaanxi University of Science & Technology, 2013, 06: 95-98+104

The development of the ability to machine glass materials to optical tolerances is highly desirable.
Diamond cutting is a promising alternative to grinding and polishing techniques for fabricating high quality surfaces on brittle materials as a well-defined single point tool is more predictable than a multi-point grinding wheel.
Dipak: Journal of Materials Science Vol. 15 (7) (1980), p. 1696 [4] R.
Takenori: Journal of materials processing technology Vol. 200 (1-3) (2008), p. 356 [7] K.
Liu: Journal of Manufacturing Processes Vol. 7 (2) (2005), p. 95 [8] P.

INTRODUCTION Polymer materials are mainly used as insulators because of their low thermal and electrical conductivity.
THERMAL CONDUCTIVITY MODELS Several theoretical and empirical models have been proposed to predict the effective thermal conductivity of composite materials.
For a two-component composite, the simplest alternatives would be with the materials arranged in either series or parallel with respect to heat flow.
Xu, Thermally conductive polymer composites for electronic packaging, Journal of Applied Polymer Science .65, 2733-8, 1997
Ruetsch,Methods of Predicting the Thermal Conductivity of Composite Systems.Journal of Polymer Engg and Science,16 (9), 615– 625, 1976 [10] Y.P.

A Theoretical Model of Strain Measurement System of Membrane Materials in Biaxial Tensile Tests Mesrop Andriasyan1,a* 1Textiles HUB, Politecnico di Milano, ABC department, 9, Bonardi street, 20133, MI, Milan, Italy amesrop.andriasyan@polimi.it Keywords: Tension membrane materials, structural test, biaxial rig, strain Abstract.
Tensile tests may be applied to a wide range of materials both rigid and flexible.
Each one of them has the possibility to extend or contract with the material and log the change in the distance between the two connection points.
The Textiles Hub provided access to its facilities, equipment and information about testing procedures References [1] Testing method for elastic constants of membrane materials, Mebrane Structures Association of Japan, 1995
Korsunsky, "The height Digital Image Correlation (hDIC) technique for the identification of triaxial surface deformations," International Journal of Mechanical Sciences, no. 159, p. 417–423, 2019

Materials. 2020 Jan;13(17):3718.
Key Engineering Materials. 2017;730:521–6.
Mechanics of Advanced Materials and Structures. 2017 Aug 18;24(11):917–23.
Advanced Materials Research. 2013;683:779–82.
International Journal of Nonlinear Sciences and Numerical Simulation. 2017 Apr 1;18(2):145–61.

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