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Changes in the micro and nano structure of cementitious materials influence greatly their macro properties.
Studies in recent years showed that the cement materials are able to heal cracks by themselves.
Fernandez, Dehydration and rehydration processes of cement paste exposed to high temperature environments, Journal of Materials Sciences 39 (2004) 3015–3024
, Materials and structures/Matériaux et constructions 31 (1998) 563-567
Edvardsen, Water permeability and autogenouse healing of cracks in Concrete, ACI Materials Journal 96 (1999) 448-454.

Fibre-optic wires can sense strain and vibration and have successfully been integrated into composite materials.
Piezoceramic materials are used in vibration based damage detection methods to generate frequency response function or wave motions [6].
They travel on the surface of a material or through the thickness of thin materials and exhibit an infinite number of wave modes because the waves are dispersive (i.e. the wave speed is a function of frequency).
Boller, "Aircraft structural health management," Smart Materials and Structures, vol. 10, pp. 432-440, 2001
Kessler, et al., "Structural health monitoring in composite materials using frequency response methods," Journal of Composites Part B, vol. 33, pp. 87-95, 2002

Introduction Al2O3 ceramics are widely used in production owing to their excellent material properties.
Grinding with diamond abrasive tools is one of the most extensively used methods for processing ceramics and other Hard and brittle materials.
The workpiece materials used for grinding were 99% Al2O3 ceramics with a length of 30 mm along the grinding direction and 2.5 mm corresponding to the grinding width.
Acknowledgements This research was sponsored by the National Natural Science Foundation of China (51275181), Science and Technology project of Fujian Province (2012H0027) and the Natural Science Foundation of Fujian Province in China (2012J01215).
Journal of Refractory Metals & Hard Materials 27 (2009) 382–393

BTEX, a group of single ring aromatic hydrocarbons, including toluene, xylene, ethylbenzene and benzene [1-2], exists in petroleum and some raw materials.
However, whether ferrite materials could be used in sediments from wetlands is unknown yet.
Materials and methods Sediment samples.
Sediment samples (3 g) and the ferrite materials (0, 5, 10, 20 g/kg) were individually placed in glass bottles (10 ml) and mixed enough.
References [1] Ping Wang and Qixing Zhou: Chinese Journal of Ecology Vol. 28 (2009), p.329 (in Chinese) [2] Junfeng Dou and Xiang Liu: Environmental Science Vol. 27 (2006), p. 1846 (in Chinese) [3] Zhaohui Xu, A.S.

Lu, Microstructures and properties of high-entropy alloys, Progress in Materials Science, vol. 61, pp. 1-93, 2014
Vincent, Microstructural development in equiatomic multicomponent alloys, Materials Science and Engineering: A, vol. 375, pp. 213-218, 2004
Chen, On the superior hot hardness and softening resistance of AlCoCrxFeMo0. 5Ni high-entropy alloys, Materials Science and Engineering: A, vol. 528, no. 10-11, pp. 3581-3588, 2011
Chumlyakov, Tracer diffusion in single crystalline CoCrFeNi and CoCrFeMnNi high entropy alloys, Journal of Materials Research, pp. 1-8, 2018
Li, Microstructure and corrosion behaviour of FeCoNiCuSnx high entropy alloys, Materials Science and Technology, vol. 31, no. 10, pp. 1148-1152, 2015

In electrospinning at high voltage, material temperature, the distance between needle and collecting plate and the situation on pushing on material within needle are factors affecting the spinning quality.
Textile Science & Technology In Chinese,2004,5
[7] ZhuangXi Fang, Polymer Science In Chinese, 2004 (4) :500-505
[8] Doshi J,Reneker D H..Journal of Electrostatics In Chinese,1995,35(2):151-160
[10] Ryu Y J,Kim H Y,Lee K H..European Polymer Journal,2003,39(9):1883-1889

The solution of RVE’s effective modulus was used as the solid material property and assigned to the macroporous’ wall.
The interaction between cracks and macroporous influenced material carrying capacity greatly.
Acknowledgement The authors are grateful for the financial support provided by the National Natural Science Foundation of China (Grant no. 10772133) and the Doctoral Fund of Ministry of Education of China (Grant no.20090032110006).
Belytschko: International Journal for Numerical Methods in Engineering, Vol. 46 (1999) No. 1, pp. 131-150 [4] S.S.
Feng: Journal of Biomedical Materials Research Part B-Applied Biomaterials, Vol. 69B (2004) No. 2, pp. 158-165.

Materials and methods The study area is located in the north part of Suzhou city in northern Anhui Province, China, with its longitudes range from 117°45′00″ to 117°52′00″, and latitudes range from 33°37′00″ to 33°43′00″.
He: Journal of Soils Sediments Vol.8, 2008, p. 51–58
Li: Journal of Biology Vol. 27, 2010, p. 74-75
[7] X.Y.Chen,J.Yang,: Journal of Jilin University(Earth Science Edition) Vol.37,2007,p.326-330 [8] H.Q.Xie,G: journal of beijing vocational & technical institute of industry Vol.1,2002,p.28-30 [9] X.Y.Wang,J.Yang,H.X.Guo: journalof china coal society Vol.31,2006,P.808-812 [10] CEPA (Chinese Environmental Protection Administration): Elemental background values of soils in China, Environmental Science Press of China, Beijing, 1990
Bai: Ecology and Environmental Sciences Vol.14, 2005, p. 518-522

Now it is beginning to use on porous materials, metal forming, potential flow problems.
Manifold method of material analysis.
Working Forum on the Manifold of Material Analysis.
Failure analysis of quasi-brittle materials involving multiple mechanisms on fractured surfaces.
Journal of physics, 2008,57 (2) : 639-647

As a result, the parts may have to be scrapped and the build has to be repeated with a higher ratio of new material.
At present, PA12 based powdered materials known as PA2200, supplied by EOS GmbH used to create functional plastic prototypes.
One of the conclusions was that after approximately 7-8 builds the properties of the processed material were so badly deteriorated that it was recommended that the remaining material be fully discarded.
References [1]D T Pham, K D Dotchev, WAY Yusoff, Deterioration of polyamide power properties in the laser sintering process, Journal of Mechanical Engineering Science IMeche, Part C, Vol.222, no.11, pp2163-2176, 2008
[2]K D Dotchev, WAY Yusoff, Recycling polyamide 12 based powders in the laser sintering process, Rapid Prototyping Journal, Vol. 15, Issue:3, pp.192-203, 2009