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On the procurement side, suppliers and networks of suppliers affect the overall throughput time, because lack of supplies may lead to shortages of materials, for example.
Wirth, Manufacturing flexibility: Measures and relationships, in: European Journal of Operational Research 118 (3), 1999, pp. 429–449
Tonchia, Manufacturing flexibility: A literature review, in: International Journal of Production Research 36 (6), 1998, pp. 1587–1617
Raturi, Sources of volume flexibility and their impact on performance, in: Journal of Operations Management 20 (5), 2002, pp. 519–548
Bertsch, Capacity Flexibility within Production, in: International Journal of Mechanical, Industrial Science and Engineering 7 (10), 2013, pp. 1–5

Smart Material Structure, 1996, 5
Journal of Sensors and Actuators, 2001, (3):200-205
Journal of Chengdu University of technology, 2000, 27(s):217-220
Chinese Journal of Rock Mechanicacs and Engineering, 1999, (5):733-738
Strain detection method in engineering practice [J], Gansu Science and Technology, 2004, (8):118-119

Gansu social sciences，2003,(6):66-69
The International Journal of Logistics Management, 2010-21(1):127-151 [10] Sebastian K.
European Journal of Operational Research,2006, 169(3):1030-1047
International Journal of Computer Integrated Manufacturing, 2009, 22(6): 483-493
European Journal of Operational Research, 2012, 216:312-325

Young’s modulus of magnesium is closer to that of natural bones than other commonly used materials for metallic implants (stainless steel, titanium and CoCr alloys).
Materials and Methods Pure magnesium and zinc powders (purity >99% for both powders) were used as starting materials.
Acknowledgment This work was supported by the 2013 Kompetitif Program from Indonesian Institute of Sciences.
K., Saeed, F., Microstructure Analysis and Corrosion Behavior of Biodegradable Mg–Ca Implant Alloys.: Materials and Design, 2012, 33, 88–97 [16] Oh-ishi, K., Watanabe, R., Mendis, C, L., Hono, K., Age-Hardening Response of Mg– 0.3 at.
Jiao., Preparation and Characterization of a New Biomedical Mg-Zn-Ca Alloy.: Materials and Design, 2012, 34, 58-64 [20] Li, H-X., Ren, Y-P., Ma, Q-Q., Jiang, M., Qin, G-W., Ternary Coumpounds and Solid State Phase Equilibria in Mg-Rich Side of Mg-Zn-Ca System at 300 °C: Trans.

In the welding process, the materials in the welding area experience different temperature ranges as time lapses.
Ebert: Material Science and Engineering, Vol. 302 (2001), p.37 [3] L.M.
Chi: Materials Science and Technology, Vol. 21 (2005), p.1078 [4] J.H.
Song: Material Science and Engineering, Vol. 381 (2004), p.129 [6] D.
Chinese journal of mechanical engineering, Vol. 40 (2004), p.165

References [1]Weiliang Jin, Qingfang Lv, Yuxi Zhao：Journal of Building Structures.2007（28）：7-13.
(China building materials industry press, China 1999)
(science press, China 2003)
[7]Xiaoyong Wang, Han-Seung Lee:：Construction and Building Materials. 2009（23）：725-733 [8]Liting Chen.
Bayesian econometrics model (Science press, China 2009).

The mechanism of chip formation and material removal process was analyzed theoretically by employing the indentation fracture mechanics.
The cut depths of grits decrease gradually from Y axis to X axis, so the material removal mode change from brittle to ductile regime.
Figure 6 is the schematic of material removal based the indentation fracture mechanics.
Acknowledgements This study is supported by National Natural Science Foundation of China (No.50475132) and Natural Science Foundation of Shandong Province (No.Y2006F16).
Kao: Journal of Tribology, Vol.122 (2000) No.4, pp.394-404

The performance of ceramic materials and bearing steel is shown in Table 1.
ASMA Journal of Tuibology, 1988,110(10):695~698
Shenyang: Liaoning Science & Technology Press.
Key Engineering Materials, 359~360: 108~112
Advanced Materials Research. 156~157: 1366~1371.

Wood was the main material for China's ancient architecture.
Fire and Materials, 1998, 22: 103-108
Fire and Materials, 1998, 22: 219-220
Chinese Science Bulletin, 2001, 46: 1398-1402
Journal of Applied and Analytical Pyrolysis, 2002, 63: 303-325

The material of 50-60017-00 type pulley is ductile iron.
However, ductile iron as a kind of traditional material, has been widely used due to high toughness, excellent toughness, good wear resistance[6].
The structure and material characteristics Structural features.
Fig.1 3D of 50-60017-00 pulley Material characteristics. 50-60017-00 type pulley is made of QT450-10, the brand stands for nodular cast iron.
Acknowledgements This research was financially supported by science and technology support project in Sichuan province (20l4GZ0018).