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Preface On behalf of the Organizing Committee, we are delighted to issue the journal which contains papers presented at the first International Conference on Material, Machines and Methods for Sustainable Development (MMMS) from 18-19 May, 2018 in Danang, Vietnam.
The purpose of the journal is to explore and ensure an understanding of the critical aspects which contributed to sustainable development, especially materials, machines and methods.
From such understanding, the conference aims at an overall approach to assist policy makers, industries and researchers at various levels to position the local technological development towards sustainable development in the global context, to assist decision making towards a greener approach especially for material, machines and methods.
We also thank the Trans Tech Publications Inc. for the publishing the selected papers in the journal of Applied Mechanics and Materials.
, Korea University, Korea Le Anh Tuan, Hanoi University of Science and Technology, Vietnam Le Chi Hiep, Ho Chi Minh City University of Technology, Vietnam Le Danh Lien, Hanoi University of Science and Technology, Vietnam Le Quang, Hanoi University of Science and Technology, Vietnam Nobuhiko Azuma, Nagaoka University of Technology, Japan Nobumasa Sekishita, Toyohashi University of Technology, Japan Nghiem Trung Dung, Hanoi University of Science and Technology, Vietnam Nguyen Dang Binh, Viet Bac University, Vietnam Nguyen Hong Lanh, Military Technical Institute, Vietnam Nguyen The Mich, Hanoi University of Science and Technology, Vietnam Nguyen Thi Thu Hien, Hanoi University of Science and Technology, Vietnam Nguyen Viet Dung, Hanoi University of Science and Technology, Vietnam Pham Minh Tuan, Hanoi University of Science and Technology, Vietnam Pham Thanh Huy, Hanoi University of Science and Technology, Vietnam Pham Van Hung, Hanoi University of Science and Technology

Experiment Major materials PBS，KHPBS，purchased from An Qing He Xing Chemical Co.
PBS products would apply into in the field of food packaging or medical materials directly.
PBS products would apply into in the field of food packaging or medical materials directly.
(in Chinese) [12] B L Seal, T C Otero, A Panitch Polymeric biomaterials for tissue and organ regeneration[J].Materials Science and Engineering, 2001, 36(34)：147-230
[13]Min Zhang, Xiao Xia Wang, Baojian Liu et al, Study on Biodegradable Behavior of Polyesters in the Soil of Shanxi Local,polymer materials science and engineering, 2008, 24（1）: 91-93.

The bionic hollow structure structure is designed; (2) As the materials of bamboo and column are different and material of column can't change, so the density of bamboo fiber distribution behaves the distribution of metal material; (3) The bamboo stem is tapered, which is due to the influence of relative uniform external force.
Applied Mechanics and Materials, 130-134 (2012) 2301-2305
Leung Materials letters, 58.21 (2004) 2595-2598
Journal of Applied Polymer Science, 112 (2009) 447-453
Ma, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 5.8 (2011) 153-161.

Theoretical and applied research on the application of high magnetic field in materials science is drastically increasing.
Lu and B.D.Sun: Materials Science and Engineering A Vol. 421(2006), p. 254
Zeng: Materials Science and Engineering A Vol. 527 (2010), p. 4953
Ohtsuka: Materials Science and Engineering A Vol. 438–440 (2006), p. 136
Deng: Materials Science and Engineering A Vol. 441 (2006), p. 181

With the advancement of science and technology, the precision of processing mechanical parts is increasingly high demand, the increasing number of small diameter deep hole parts, which puts forward higher requirements of deep hole processing equipment and Gun-Drill sharpening devices.
With the wearing and tearing of gun drill in the process of machining, especially the processing of stainless steel and heat resistant alloy material products, the consumption is high, processing quality is poor, cutting tool is worn,when the wear reaches the dulling standard, the tool should be grinded immediately.But due to the grinding device production haven't been widely used in current domestic market,the relevant process is still not known, and the gun drill price relatively expensive,one gun drill is in two thousand yuan of above, if the problem of good tool resharpening cannot be solved,the processing costs would be an inevitable impact.Therefore, the design of gun drill grinding device is imminent.
Journal of heilongjiang science and technology information, 2007, 18:075
Journal of gansu science and technology, 2012, 28 (15)
Journal of equipment maintenance technology, 2009 (1) :31-34.

The developed fuzzy models have been applied to the numerical data obtained by the finite element analysis Process Piping Materials The language of materials can be complicated.
Nevertheless, efficient use of B31.3 requires some basic comprehension of Code layout and materials technology, especially material classification systems and material specifications.
Generic Designations Classification of materials by generic designation involves the grouping of materials into broad categories according to certain attributes such as general composition, mechanical properties, product form or end use.
With piping materials, generic grouping based on alloy content is most popular.
Christo Michael T, Veerappan A.R. and Shanmugam S, A Study on Effect of Cross Section Approximation on Behaviour of Pipe Bends with Ovality and Thinning, International Journal of Advanced Engineering Sciences and Technologies. 2 (2011) 133-139

When girder reaches Mm, Plastic length Lp and yield length Lpr occurred by material model.
Structural performance and design evaluation of HPS 70W bridge girders, Journal of Constructional Steel Research, Elsevier Science, Vol. 63, pp. 909-921. (2007) [2] Earls, C.J. and Shah, B.J.
High performance steel bridge girder compactness, Journal of Constructional Steel Research, Elsevier Science, Vol. 58, pp. 859-880. (2002) [3] Green, P.S., Sause, R. and Ricles, J.M.
Strength and ductility of HPS flexural members, Journal of Constructional Steel Research, Elsevier Science, Vol. 58, pp. 907-941. (2002) [4] Barth, K.E. and White, D.W.
Inelastic beams under moment gradient, Journal of the Structural Division, ASCE, Vol. 93, No.ST1, pp. 381-397. (1967)

Grain morphology of different test materials.
Irradiation property of pressure vessel materials in China, Materials China, 05 (2011) 7-10.
Microstructure changes of reduced activition steel after deuterium ion irradiation at high temperature, Journal of Functional Materials, 23 (2014) 23070-23074
Mao, et al., Intrinsic mechanisms of ductile-brittle transition for F460 steel welding coarse grained heat affected zones with different heat inputs, Journal of Materials Engneering, 44 (2016): 70-76.
Yu, Cleavage fracture mechanics and micromorphology analysis of low carbon steel, Journal of Kunming University of Science and Technology (Nature Science Edition), 36 (2011) 18-22.

It suggests that the main composition is the KNb3O8 and there is still some KNbO3 remaining, meanwhile, some materials have begun to convert to the K4Nb6O17.
The XRD pattern of the sample calcined at 1100℃ shows the strong diffraction peaks of K5.75Nb10.85O30, indicating that the most materials transformed into the K5.75Nb10.85O30.
Osterloh: Chemistry of Materials.
Justin Youngblood: Chemistry of Materials.
In Chinese [15] Haiping Cui, Jun Yan and Minghui Ye: Materials Science and Technology.

Introduction Ammonium polyphosphate (APP) is a typical flame retardant for many synthetic polymers and cellulosic materials [1-4].
Experimental Methods Materials:Diammonium hydrogen phosphate (DAP) and urea were supplied by Sinopharm Chemical Reagent Co.
Journal of Applied Polymer Science.
Journal of American Chemical Society, Vol. 91,(1969),p. 62
Journal of Agriculture Food Chemistry, Vol. 27,(1979), p. 612