scholarly journals Assessing powder flowability at low stresses using ball indentation method: Evaluation of constraint factor

2021 ◽  
Author(s):  
U. Zafar ◽  
C. Hare ◽  
A. Hassanpour ◽  
M. Ghadiri
Keyword(s):  
Method Evaluation ◽  
Constraint Factor ◽  
Indentation Method ◽  
Ball Indentation ◽  
Powder Flowability

Evaluation of material degradation of lcr-lmo-0.25v steel using ball indentation method

2004 ◽  
Vol 18 (10) ◽  
pp. 1730-1737
Author(s):  
Chang-Sung Seok ◽  
Jeong-Pyo Kim ◽  
Jae-Mean Koo
Keyword(s):  
Material Degradation ◽  
Indentation Method ◽  
Ball Indentation

scholarly journals Ball indentation on powder beds for assessing powder flowability: Analysis of operation window

2017 ◽  
Vol 310 ◽  
pp. 300-306 ◽  
Author(s):  
Umair Zafar ◽  
Colin Hare ◽  
Ali Hassanpour ◽  
Mojtaba Ghadiri
Keyword(s):  
Ball Indentation ◽  
Powder Flowability

The Method to Obtain JR- Curve by Continuous Ball Indentation Method

2019 ◽  
Vol 795 ◽  
pp. 432-438
Author(s):  
Jia Ming Zhang ◽  
Kai Shu Guan ◽  
Qiong Qi Wang ◽  
Si Ning Fan ◽  
Guo Yao Chen
Keyword(s):  
Effective Elastic Modulus ◽  
Standard Test ◽  
Empirical Correlation ◽  
Single Sample ◽  
Spherical Indentation ◽  
Indentation Method ◽  
Ball Indentation ◽  
Unloading Compliance ◽  
Extension Length ◽  
Unloading Compliance Method

JR-curve is one of an important index to characterize the fracture properties of metal materials. It is usually determined by multi-sample unloading method and single-sample unloading compliance method recommended by standard methods; In consideration of the similarity between the continuous ball indentation method and the single-sample unloading compliance method, The JR-curve is obtained by using the empirical correlation between effective elastic modulus ED of the continuous ball indentation and the unloading compliance C for single simple in this article. The calculation conducted by the correlation formula of the extension length of crack with unloading compliance C. However, results indicate that the fracture toughness J0.05 obtained by empirical correlation of load-depth curve of continuous spherical indentation is still quite different from those given by the standard test.

scholarly journals Assessment of surface caking of powders using the ball indentation method

2017 ◽  
Vol 521 (1-2) ◽  
pp. 61-68 ◽  
Author(s):  
Qinqin Chen ◽  
Umair Zafar ◽  
Mojtaba Ghadiri ◽  
Jinfeng Bi
Keyword(s):  
Indentation Method ◽  
Ball Indentation

scholarly journals Effect of strain rate on powder flow behaviour using ball indentation method

2021 ◽  
Vol 380 ◽  
pp. 567-573
Author(s):  
Umair Zafar ◽  
Colin Hare ◽  
Ali Hassanpour ◽  
Mojtaba Ghadiri
Keyword(s):  
Strain Rate ◽  
Flow Behaviour ◽  
Powder Flow ◽  
Indentation Method ◽  
Ball Indentation

Spherical Indentation and Flow Property Measurement-Finite Element Simulation

2000 ◽  
Vol 649 ◽  
Author(s):  
Ming Y. He ◽  
G. R. Odette ◽  
G. E. Lucas
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Flow Property ◽  
Finite Element Simulations ◽  
Spherical Indentation ◽  
Indentation Method ◽  
Ball Indentation ◽  
Element Simulation ◽  
Indentation Tests ◽  
Property Measurement

ABSTRACTFinite element simulations of ball indentation tests were performed and analyzed using the automated ball indentation method. The accuracy and reliability of this methods were assessed.

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