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Whereas, a positive value for SF means that the grinding wheel removes too much material.
For an insufficient material removal SF becomes negative.
In: Transactions of the ASME, Series I: Journal of Fluids Engineering Vol. 126 (4), pp. 642–649, 2004 [3] Bechert, D.
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In: CIRP Journal of Manufacturing Science and Technology, Vol. 3 (1), pp 14-26, 2010 [5] Lietmeyer, C.; Oehlert, K.; Seume J.

In any case, high uncertainties do exist with cores, including the wearing state of parts and performance of materials.
Disassembly and primary inspection Cleaning Recycling of materials and damaged parts Testing Reassembly Remanufacturing process Fig.3.
Product Recycling (remanufacturing) as a Conversation Option: an International Dimension in Advances in Materials Technology in the Americas-1980, Materials Recovery and Utilization,1980, 13~ 139
Journal of Operations Management, 2000, 18: 467~ 483
[8] Li Xinjun, Da Qingli, Novel EOQ Model for Remanufacturing, Journal of Southeast Uniersity(Natural Science Edition), Vol.36(4):667-671, 2006.

Fatigue and Fracture of Engineering Materials and Structures 15, 1051-1069
Fatigue and Fracture of Engineering Materials and Structures 6, 617-626
Fatigue and Fracture of Engineering Materials and Structures 15, 1141-1153
Fatigue and Fracture of Engineering Materials and Structures 19, 99-109
Fatigue and Fracture of Engineering Materials and Structures 31, 209-220

Table 1 Properties of different biocompatible materials widely used for prosthesis
Materials used as biomaterials incorporate polymers, metals, ceramics and composites.
[10] Tissakht M, Ahmed AM, Tensile stress-strain characteristics of the human meniscal material, Journal of Biomechanics, 4 (1995) 411-22
[15] Wang GZ, Xuan FZ, Effects of triaxial stress on martensite transformation, stress-strain and failure behavior in front of crack tips in shape memory alloy NiTi, Materials Science and Engineering A, 527(6) (2010) 1529-36
[20] American Society for Testing and Materials, 1992, F75-87, 42, F90-87, 47; F562-84,150

The length of the pin is correlated with the thickness of the materials to be joined.
When joining soft materials with hard materials by using friction stir lap welding, it is preferable, as the first step, to plunge the pin through the softer material to avoid damage to the pin.
Sci., Vol. 24, No. 4, Aug. 2001, pp. 361–371, © Indian Academy of Sciences
Padhy, Effect of ultrasonic vibration on welding load, temperature and material flow in friction stir welding, Journal of Materials Processing Technology, Vol.239, Jan.2017, Pp.273-283, https://doi.org/10.1016/j.jmatprotec.2016.08.025 [21] O.
Oancă, a.o., FSW-US Hybrid Process Joining of Engineering Materials, Key Engineering Materials, ISSN 1662-9795, Vol.890, pp.47-55, 2021

The combination of the three materials CS/XG.SiO2 produces bio-composite materials that are effective in photodegradation of cationic textile dye waste such as methylene blue.
Previous research synthesised similar composite materials but used commercial chitosan and Xanthan Gum.
Flow Diagram of CS/XG.SiO2 Synthesis Characterisation of Synthesised Materials Characterisation of the synthesised CS/XG.SiO2 composite was carried out using FTIR, XRD, and SEM tests.
Characterization of Materials The following are the results of the FTIR and XRD spectra of the synthesised material.
After all materials were tested with FTIR and XRD, CS/XG.SiO2 adsorbent was tested with SEM to see the morphology or surface of the material.

Acknowledgements This work was financially supported by the National Natural Science Foundation (40872205), Guangdong Natural Science Fund (07003738), Guangdong Provincial Science & Technology Project (2008B030303009) and University Doctor Discipline Special Research Fund of Education Ministry (20070558032).
Li: The Chinese Journal of Geological Hazard and Control Vol. 5(3) (1995), p. 39
Tang: Advances in Water Science Vol. 6(4) (1995), p. 304-310
Wang: Journal of Hydraulic Engineering Vol. 47(6) (2002), p. 60-66
Wang: Chinese Journal of Rock Mechanics and Engineering Vol. 21(4) (2002), p. 526-531

However, it is difficult to bond a different material together because of the chemical stability.
The work material is commercial PTFE with shape of 30 x 25 x 3 mm. .
On the other hand, the widths of groove of both materials become narrower than the calculated width.
Hattori: Journal of the Surface Science Society of Japan, Vol. 18 (1997), No. 7, pp. 7-12
Takeno: Journal of Japan Institute of Light Metals, Vol. 54 (2004), No. 11, pp. 538-543.

The fixation materials should be removed during the fifth month after injury.
The fixation materials should be removed during the fifth month after injury.
Corrosion makes weakening of appliances, that can lead to mechanical failure or even fracture of the orthodontic materials.
According to Kawai et.al., in the review of their research the radiographic features of 325 mandibular fracture sites in 231 patients over a 10-year period were investigations and remove fixation materials after fractures of the mandible through retrospective research of radiographs.
The fixation materials should be removed during the fifth month after injury.

For more precise results non-linear behaviour of the materials has to be considered.
Non-linear material data were based a reduced material strength in tension which was defined as 0.5 MPa.
Labudkova, Fibre concrete foundation slab experiment and FEM analysis, Key Engineering Materials. 627 (2015) 441-444
Cheung, The Finite Element Method in Engineering Science, McGraw-Hill, 1971
Tvrda, Probability and sensitivity analysis of plate, Applied Mechanics and Materials. 617 (2014) 193-196