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In 3DP process, part has a large contour error due to the print machine, printing parameters, the characters of part materials and other factors.
However, in 3DP process, the printer, printing parameters, the characters of part materials have significant impact on the contours and dimensional accuracy of parts.
Yao [4] studies the powder materials and optimizes the printing parameters, and shortens the parts manufacturing time and reduces the use of powder and binder in 3DP; Besides the materials and printing parameters, the transferring STL model into different file format influences on the part manufacturing accuracy of 3DP too, Yan Liang have studied these effects[5]; W.
Rapid Prototyping Journal, 2006, 1:42-52
Journal of Materials Processing Technology,2001, 119 : 348-353

The design of the piezoelectric film is relatively easy, the piezoelectric ceramic materials with appropriate thickness, appropriate performance is designed according to the cavity’s resonant frequency, The back of the circuit is relatively easy to handle, as the Piezoelectric material’s pressure disappears, the charge will disappear, there will be no voltage, To take advantage of the piezoelectric material to generate electricity, the piezoelectric ceramic chip is in parallel with a capacitor, The value of capacitance is selected according to the performance of piezoelectric ceramic materials and the voltage required by the behind circuit, then, a low-power DC-DC converter is followed to get a constant voltage.
Journal of Detection & Control, 2008,30 (02).1-4.in Chinese
Journal of Detection & Control, 1994. (01).8-13, in Chinese
Journal of Nanjing University of Science and Technology,1999,.23 (05).418-421, in Chinese
Engineering Science,2005,7 (01).27-32, in Chinese

The performance, behavior, dynamic response and failure mode of structures subjected to blast loadings are extremely complex, especially for brittle materials, such as concrete.
The strain rate effect is taken into account in the model by the dynamic increase factor (DIF), recommended by CEB[10], which has been used widely in materials estimation and numerical analysis[1, 2].
Nurick, International Journal of Impact Engineering, vol. 31, no. 1, 2005, pp. 55-83
[5] WEI Xue-ying, BAI Guo-liang, Journal of PLA Univeristy of Science and Technology, vol. 8, no. 5, 2007, pp. 525-529(in Chinese)
[7] SUN Wenbin, Journal of Liaoning Technical University (Natural Science), vol. 28, no. 2, 2009, pp. 217-220(In Chinese)

All powder materials were synthesized using a sol-gel method.
All the powder materials were synthesized using a sol-gel method as previously reported by our research group [8-10].
Traversa, Materials challenges toward proton-conducting oxide fuel cells: a critical review.
ACS applied materials & interfaces, 2016. 8(14): p. 9097-9103
Journal of Sol-Gel Science and Technology, 2016. 80(2): p. 259-266.

Journal of Chinese Institute of Food Science and Technology, Vol. 9(3) (2009), P. 53-60.
Journal of Chinese Medicinal Materials, Vol. 36(1) (2013), P. 137-140.
Journal of Zhejiang University of Science and Technology, Vol. 25(1) (2013), P. 27-32
Journal of Northeast Normal University (Natural Science Edition), Vol. 41(2) (2009), P. 154-159.
Journal of Natural Science of Heilongjiang University, Vol. 30(2) (2013), P. 220-224.

So, we add some plasticizers in high-molecular materials to improving the mouldability and physical mechanical properties.
And we can conclude through SEM that the texture of materials which plastifying PVC are different.
The polymer chain keep entangling with each other and the materials have higher breaking strength and elongation at break.
Synthesis of MPEG-PCL Diblock Copolymer and Its Plasticization to PVC[J].Polymer Materials Science & Engineering,2009,1(25):27-30”In Chinese”. [18] Jingbo Yin, Xiaochun Lu, Yanlin Cao.
Polymer Materials Science & Engineering, 2008.1, 1(24):151-154”In Chinese”

Pagano: Journal of Composite Materials Vol. 9 (1975), p. 91
Kollar: Journal of Composite Materials Vol. 28 (1994), p. 392
Mai: Journal of Composite Materials Vol. 31 (1997), p. 673
Paton: Journal of Composite Materials Vol. 31 (1997), p. 696
Kim: Journal of Composite Materials Vol. 35 (2001), p. 253

According to the authors, these databases cover most scientific interest journals in the areas of operations management, organizational management, and social sciences.
Genin et al. (2001) [3] report the principle of MRP (Material Requirements Planning) and how did the need for synchronization of the available quantities of materials, components and sub-assemblies in a context of fixed deadlines and stable products.
DATA MANAGEMENT PLANIFICATION CAPACITY MANAGEMENT Orders forecast Finished goods inventory Nomenclatures Inventories raw materials and subassemblies Post load Ranges Global Resource Planning (Factories, Hiring ...)
Procurement Production Distribution Sales § Materials program ; § Supplier selection ; § Cooperation
- Personnel planning; - Ordering materials

In addition, Poisson’s ratio of the resin materials is estimated using Digital Image Correlation (DIC).
Methods and Materials Materials and Sample Preparation.
Hence the authors they have filled in a knowledge gap about these materials.
[23] FormLabs, “Standard Materials for High-Resolution Rapid Prototyping,” pp. 1–3, 2017
Cai et al., “Comparative study on 3D printing of polyamide 12 by selective laser sintering and multi jet fusion,” Journal of Materials Processing Technology, vol. 288. 2021. doi: 10.1016/j.jmatprotec.2020.116882

Effects of tool shapes (contacting angles to the original materials, contacting length of punch with a material) which mainly affects the results on thickness change of original materials were investigated.
This paper discusses the aspect of the increase of materials during press working.
[5] Y.Huanga, Z.Y.Lob and R.Dub, Minimization of the thickness variation in multi-step sheet metal stamping, Journal of Materials Processing Technology, Vol.177(2006), 84-86
[6] S.M.Mahdavian and D.He, Product thickness analysis in pure cup-drawing, Journal of Materials Processing Technology, Vol.51(1995), 387-406
[7] G.T.Kridli, L.Bao, P.K.Mallick and Y.Tian, Investigation of thickness variation and corner filling in tube hydroforming, Journal of Materials Processing Technology, Vol.133(2003), 287-296