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Experiments The absorption coefficient is the efficiency of materials on sound absorption, a common characteristic of building or sound insulation materials.
For natural sound absorptive materials, most materials were made in form of fiber, compacted as board or as flexible layers [12–14].
Adachi, The development of sound absorbing materials using natural bamboo fibers, High Performance Structures and Composites. (2002) 157–166
Sun, Sound absorption properties of ceramic hollow sphere structures with micro-sized open cell, Materials Letters. 134 (2014) 268–271
Fujita, Performance improvement of sound-absorbing materials using natural bamboo fibers and their application, in: High Perform.

References [1] Zhao-Dan, Ma Chunyan: Wood composite materials.
Shanghai building materials (2002)
[2] Hao Yua kai, Xiao Jiayu:High-performance composite materials science.
[6] Ouyang Guoen, Ou Guorong:Composite Materials Testing Technology.
Journal of Composite Materials(2001).

Ag dopant can adjust the properties of ZnO materials.
Materials Research Bulletin 82 (2016) 130–135
Journal of Colloid and Interface Science 479 (2016) 127–138 [8] Y.H.
Gong et.al, Large scale synthesis of hexagonal simonkolleit nanosheets for ZnO gas sensors with enhanced performances.Materials Letters 186 (2017) 7–11
Microelectronics Journal 40 (2009) 286–288 [10] E.

Creep of Steel at Elevated Temperatures The term creep refers to time-dependent strain response of materials, or more generally to time- and rate-dependent stress-strain response.
Creep tests on materials are commonly conducted by subjecting the material to constant stress and temperature, and then measuring strain as a function of time.
The support of the National Science Foundation and of NSF Program Director M.P.
Harmathy, A Comprehensive Creep Model: Journal of Basic Engineering, Trans.
Freudenthal: The Inelastic Behavior of Engineering Materials and Structures (John Wiley & Sons Inc., New York 1950)

Brass (JIS C2600) materials were annealed at 500 ˚C, 600 ˚C, and 700 ˚C and resulted in different microstructures with grain sizes of 50 mm, 70 mm and 111 mm, respectively.
The annealed brass materials were carefully machined as cylindrical billets with the same dimension of 1.1 mm in diameter and length.
Wang, An experimental study on size effects on flow stress and formability of aluminm and brass for microforming, Journal of Materials Processing Tech. 184, 1-3 (2007) 42-46
Chan, Geometry and grain size effects on the fracture behavior of sheet metal in micro-scale plastic deformation, Materials & Design. 32, 10 (2011) 4738-4746
Wang, Effects of Grain Size on Micro Backward Extrusion of Copper, Advanced Materials Research. 83-86, (2010) 1092-1098

Influences and mechanisms of ordinary portland cement on properties of asphalt emulsion composites Zhenjun WANGa and Rui WANGb School of Materials Science & Engineering, Chang’an University, Xi’an 710061, P.
Materials and methods Raw materials.
Sha: Journal of Chang’an University: Natural Science Edition Vol. 27 (2004), p. 12-16
[11]Pouliot N., Marchand J. and Pigeon M.: Journal of Materials in Civil Engineering Vol. 15 (2003), p. 54-59
Akpinar: Journal of Materials Engineering and Performance Vol. 16 (2007), p. 578-583

Ro¨sler (1993), Journal of Magnetism and Magnetic Materials 125, 373
Morisako (2005), Journal of Magnetism and Magnetic Materials, 290-291 138
Saiden (2002), Pakistan Journal of Applied Sciences 2(12), 1092
Ganne (2001), Journal of Magnetism and Magnetic Materials, 224(1), 17
Journal of Magnetism and Magnetic Materials, 312(2), 418

Introduction Porous ceramic materials with both low and high temperature applications are of great interest today (insulators, catalyst supports, filters, ceramic membrane etc.).
Mullite is one of the most important porous support materials [2].
[2] Fengkun Yang, Cuiwei Li, Yamei Lin, Chang-An Wang, Effects of sintering temperature on properties of porous mullite/corundum ceramics, Materials Letters. 73 (2012) 36–39
Ekanem, Characterisation and optimisation of deferration of Kankara clay, ARPN Journal of Engineering and Applied Sciences. 2(2007) 60-74
El-maghraby, Characterization and assessment of Saudi clays raw material at different area, Arabian Journal of Chemistry. 3(2010)271–277

Kumar, Progress in Natural Science: Materials International, Vol. 26(6), (2016), p. 533-539 [4] G.
Kar, Progress in Materials Science, Vol. 83 (2016), p. 330-382 [6] Y.
Materials Today Physics.
Schwingenschlögl, Journal of Materials Chemistry A.
Journal of electronic materials.

In such a grim situation, it is necessary to predict the corrosion behaviour of such lap joint structures with dissimilar materials by a method.
PARSTAT4000 electrochemical detector (Figure 2) is used to measure the polarization curve of electrode materials.
It can provide a lot of useful information in the corrosion mechanism, corrosion rate and corrosion sensitivity of specific materials in specified environment etc [5].
This makes it clear that the boundary element model can be used for specific service environments of different aircrafts to predict the galvanic corrosion of lap joint structure with dissimilar materials
CIESC Journal, 2013, 64 (8): 2760-2768