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(4) For all TIP bi-materials, according to Ou’s research [3], always exists when the poling direction of the materials are perpendicular to the crack face.
When the materials have different poling directions, TIP bi-materials don’t have the classification.
Journal of the Mechanics and Physics of Solids. 1992, 40(4): 739-765
International Journal of Fracture. 2003, 122(3-4): 101-130
International Journal of Fracture. 2003, 119(2): L41-L46.

Hence, C& D waste materials can be used in road construction as alternate materials, with economy and sustainability.
Today, science and technology has a responsibility of updating new trends which are both economical and eco-friendly.
Moisture damage resistance is also improved when increasing C&D waste materials.
Rahman et al. (2014) concluded that the use of C&D materials is suitable as alternative filter materials in permeable pavement systems.
In this paper an attempt has been made to observe the rutting performance of road pavement using C&D waste materials.

They are of hard to machine materials.
But these materials are difficult-to-machine materials[2,3].
Zhang: Journal of Chongqing University (Natural Science Edition) Vol. 31 (2008), pp.598-602.
Huang: Materials Science Forum Vol. 626-627(2009), pp.617-622
Iost: Journal of Materials Science Vol. 38 (2003), pp.2525-2536

Variable composition and characteristics undermine customers’ confidence who prefers primary materials with certified properties and at more competitive value/cost.
Waste type segregation, heterogeneity and material degradation during service life become the main drawbacks for quality assurance and acceptance of secondary materials.
Reused and recycled materials are being regulated and they do not have specific technical barriers, but these materials face clear competition in the market with primary materials (e.g.
CE marking has less traceability requirements for primary materials).
Ideker, "Cracking susceptibility of concrete made with coarse recycled concrete aggregates," Construction and Building Materials, vol. 102, no.

In addition the TCR of the different materials is regarded.
N., “Silicon Micromachined Pressure Sensors,” Journal of the Indian Institute of Science, Vol. 87, No. 1, pp. 115–131, 2007
[19] Robertson, J., “Diamond-like amorphous carbon,” Materials Science and Engineering: R: Reports, Vol. 37, No. 4-6, pp. 129–281, 2002
The science of miniaturization,” 2nd Ed., Boca Raton [u.a.]: CRC Press, 2002
Journal of Micromechanics and Microengineering Vol. 17, No. 6, pp.

The results indicate that increasing the amount of hair significantly improves the strength of the materials.
The principle of testing the tensile strength of materials consists in a slow applying constant tensile force.
These composite materials can find various applications in fields ranging from automotive parts to construction materials and even aerospace components.
Iuliano, "Sustainability in the manufacturing of composite materials: A literature review and directions for future research," Journal of Manufacturing Processes, vol. 85, pp. 858-874, 2023/01/06/ 2023, doi: https://doi.org/10.1016/j.jmapro.2022.12.020
Vatsal, "Fabrication and Analysis of Human Hair Based Hybrid Epoxy Composite for Mechanical Properties," International Journal of Innovative Science and Research Technology, vol. 07, no.

Studies about the high-speed milling of difficult-to-machining materials have been reported in recent years [2,3,4,5].
As one of typical difficult-to-machining materials, martensitic stainless steels have a significant work hardening tendency.
Tlusty: Journal of Manu.
Chen: Journal of Mach.
Aspinwall: Journal of Mater.

Zn-Sn target material as one of many sputtering target materials for coated glass, at present, is mainly prepared by conventional casting and die-casting methods.
Acknowledgements This work was financially supported by the Natural Science Foundation of Jiangxi, china under Contract No. 2010GQC0158 and State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and technology.
Wu: Vacuum Science and Technology Vol. 21(2001), p. 342 [5] R.C.
Wen: Materials Science and Engineering of Powder Metallurgy Vol. 12(2007), p. 244 [6] T.
Chen: Journal of Sichuan University of Science and Technology(Natural Science Edition) Vol. 18(2005), p. 22

Third, they should find additional materials to support the teaching materials and get students interested.
Therefore, the teachers’ skill in “enriching teaching materials” needs to be improved quickly.
For instance, the Core English of Shanghai Jiao Tong University and the English reading materials included in “Construction Plan of Network-based Remote Teaching System in the New Century” recommended by the State Council are excellent teaching materials.
The contents of all-English teaching materials vary according to different majors.
North University of China Journal 2005, (2)

Heat-Resistant Composite Materials Based on Secondary Material Resources V.D.
Al-Hawas, Effects of key factors on compressive and tensile strengths of concrete exposed to elevated temperatures, Arabian journal for science and engineering, 39(6) (2014) 4507-4513
Rusina, Heat-resistant concrete using technogenic raw materials, Building materials, 1 (2013) 12-14
Sciences, Volgograd, 26, 17
Rossignol, Use of silicon carbide sludge to form porous alkali-activated materials for insulating application, European physical journal-special topics, 224(9) (2015) 1725-1735