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Materials and methods 1.1 Materials The AAB flute corrugated fiberboard was selected to compare the edgewise compressive strength with honeycomb fiberboard.
To eliminate the impact of materials, the same material used in the plate and core of honeycomb fiberboard and AAB flute corrugated fiberboard in the models.
The physical parameters of the materials are presented in Table.1[13].
International Journal of Impact Engineering,37(2010):467-474
Materials and Desigh,53(2014):293-301; [6] Ji Hongwei, Xu Geling, Li Junchao.

Many efforts have been made to develop protective coatings to against AO erosion, Al2O3, SiO2 is thought as the best materials[3,4].Generally, Al2O3, SiO2 coating are prepared by physical vapor deposition[5], but these inorganic coatings have a different coefficient of thermal expansion from substrates, they can be cattle, and crack easily, and can not protect substrate materials well.
Polyimide is one of the most used materials on spacecrafts as substrate materials of solar panels.
The study is helpful for developing high performance materials against AO erosion.
Degradation of spacecraft materials in the space environment, MRS Bulletin 35(2010): 20-24
Journal of Applied Polymer Science 119(2011):794-802 [8]F.

Computational Materials Science, 2014. 82: p. 134-139
Journal of Sandwich Structures and Materials, 2015
Materials & Design, 2015. 85: p. 282-295
Arabian Journal for Science and Engineering, 2015
Nguyen, Q.T., et al., Composite Materials for Next Generation Building Façade Systems.

Journal of Applied Polymer Science 117: 2205–2212
A new procedure to produce lignocellulosic anion exchangers from agricultural waste materials.
Nitrate removal from aqueous solution by adsorption onto various materials.
Science Technology 23:323–333
Asian Journal of Research in Social Sciences and Humanities 6: 1-12.

For the 800 oC sample, the materials seem to be more crystalline with individual polyhedral shapes.
The XRD patterns of all the materials are matched to the ICDD reference pattern number 01-089-2810 which is α-Fe2O3 rhombohedral structure with space group R-3c.
Therefore, it can be seen that purity, phase and crystal size are dependent on the heat treatments done on the materials.
This parameter also affecting the crystallite size and morphology of the materials.
El-Shahat: submitted to International Journal of Inorganic Chemistry (2010) [9] D.

INTRODUCTION From the realm of science-fiction fantasy, three-dimensional printers are now becoming a reality, heralding what many be the beginning of a new industrial revolution.
Selective Laser Sintering (SLS) was selected as the fabrication method for this printable UAV as The primary benefit of SLS is the produced part’s durability and the fact that SLS users may choose from the widest range of engineering-grade materials available in the rapid prototyping industry.
That is because a UAV is smaller than a manned aircraft so that the material cost is lower.
Ahmed, ‘Design of a Dynamic Stall Test Rig’, Applied Mechanics and Materials Vols. 215-216 (2012) pp 785-795, © (2012) Trans Tech Publications, Switzerland [2] S.
Ahmed, ‘Rapid Prototyping of Aerodynamics Research Models’, Applied Mechanics and Materials Vols. 217-219 (2012) pp 2016-2025, © (2012) Trans Tech Publications, Switzerland [3] N.A.Ahmed and J.R.Page, ‘An Improved Approach for Future Aerospace Design process’, 13th Australian International Aerospace Congress/13th Australian Aeronautical Conference, 9 - 12 March 2009, at the Convention Centre, Melbourne, Australia

School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, China 2.
Introduction Round copper billet as raw materials has been used in air conditioning, refrigeration copper tube, welding material and electric wire etc.
J Li: Materials Science and Engineering A.
Incropera: International Journal of Heat and Mass Transfer.
Thomas: Metallurgical and Materials Transactions B.Vol.35B (2004), p.1151.

Introduction Magnesium alloy was the lightest metal in practical metallic materials and had much superiority such as high strength and stiffness, excellent machine ability and recyclable ability.
It had been regarded as the recyclable lightweight material to replace polymer materials.
When magnesium alloy was used as the parts for structural materials, it was very important to consider the safety under multiaxial and biaxial loading since machines and products were under multiaxial loading rather than uniaxial one.
The sample materials used for the experiments were the plates of the magnesium alloy; AZ31B-0 (without heat treatment), AZ31B-200 (with 200 °C heat treatment), and AZ31B-430 (with 430 °C heat treatment) by Osaka Fuji industry.
Fukuda, Journal of the Japan Society of Mechanical Engineers, Vol. 59-565 (1993), p. 2143-2148 [11] S.Takahashi, T.Shimizu, Science of Machine, Vol. 37-4 (1985), p. 485-490 [12] S.

The tensile test, compression test, bending, shearing and torsion tests are used for examining mechanical properties of biological materials.
After an upgrade the device should be used for testing biological materials [1].
Kurkin: Design of biaxial tensile testing machines, Journal of Strength of Materials, Volume 5, Number 12 / December, 1973, 1519-1524, ISSN 0039-2316 [2] J.
R Friedman: Mechanical properties and bone densities of canin trabecular bone, Journal of Materials Science: Materials in Medicine, Volume 9, Number 5 / May, 1998, Page 263-267 [4] T.
Bressan: Construction and validation tests of a torsion test machine, Journal of Materials Processing Technology, Volume 179, Issues 1-3, 20 October 2006, Pages 23-29 [10] A.

Moreover, the fresh material even animal mat may bring the risk of infection, if the rodent droppings can’t be protected.
Replacement means that it can be tested or studied in other ways instead of animals to reach a certain test purpose, or use insensible experiment materials instead of the conscious spine animals.
It not only helps to make more fully use of the experiment materials and save the funds, but also prompts researchers to update the experimental methods, look for the new experimental ways, and then to make scientific research work more scientific.
Domestic journals such as “experimental animal science” and “China journal of experimental zoology “and etc have opened up the“3R”column, which can help researchers to know the significance about “3R” application to life science, medical research and drug development experiment and so on from the technical level and ideology.
OU Yang, Z.R Li: Laboratory Animal Science.