Mechanical Properties of Feedstock Material for Fused Deposition of Ceramics

1998 ◽  
Vol 542 ◽  
Author(s):  
N. Venkataraman ◽  
T. McNulty ◽  
S. Rangarajan ◽  
M. Vidaic ◽  
M. J. Matthewson ◽  
...  

AbstractA scientific methodology to characterize the critical mechanical properties of feedstock material for fused deposition of ceramics has been developed. A detailed discussion of the methodology of mechanical characterization and results for lead zirconate titanate (PZT) fused deposition of ceramics (FDC) feedstock is presented. The effect of storage time, temperature and crosshead displacement rates on the mechanical properties of the PZT FDC feedstock was studied. The modulus and the failure stress increase with displacement rate. The modulus and failure stress decrease with temperature indicating the necessity for cooling filaments prior to entrance to liquefier. The modulus also decreases with storage time in 50% RH while failure strain increases with storage time in 50% RH.

1999 ◽  
Vol 82 (7) ◽  
pp. 1757-1760 ◽  
Author(s):  
Thomas F. McNulty ◽  
Daniel J. Shanefield ◽  
Stephen C. Danforth ◽  
Ahmad Safari

2011 ◽  
Vol 22 (9) ◽  
pp. 1393-1399 ◽  
Author(s):  
Da-Wei Wang ◽  
Mao-Sheng Cao ◽  
Jie Yuan ◽  
Quan-Liang Zhao ◽  
Hong-Bo Li ◽  
...  

2012 ◽  
Vol 51 (1R) ◽  
pp. 011501 ◽  
Author(s):  
Qihuang Deng ◽  
Yuchi Fan ◽  
Lianjun Wang ◽  
Zhi Xiong ◽  
Hongzhi Wang ◽  
...  

2011 ◽  
Vol 181-182 ◽  
pp. 749-753
Author(s):  
Lv Tao Zhu ◽  
Bao Zhong Sun

In this study, tensile experiments of Twaron fiber tows under different strain rates (quasi-static:0.001s-1, dynamic: 800s-1~2400s-1) were carried out with MTS 810.23 materials tester and split Hopkinson tension bar (SHTB) respectively. The results showed that the mechanical properties of the Twaron fiber tows were sensitive to strain rate: the stiffness and failure stress of the fiber tows increased distinctly as the strain rate increased, while the failure strain decreased. From scanning electronic microscope (SEM) photographs of the fracture surface, it is indicated that the Twaron fiber tows failed in a more tough mode and the axial split will become more severe as the strain rate increases.


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