Time and temperature effects on the fracture toughness of rigid poly(vinylchloride) pipe materials

1982 ◽  
Vol 22 (13) ◽  
pp. 826-831 ◽  
Author(s):  
J. F. Mandell ◽  
A. Y. Darwish ◽  
F. J. McGarry
Keyword(s):  
Fracture Toughness ◽  
Temperature Effects ◽  
Rigid Poly ◽  
Pipe Materials

Practical Evaluation of the Strain Rate and Temperature Effects on Fracture Toughness of Steels

2015 ◽  
Author(s):  
Koji Gotoh
Keyword(s):  
Fracture Toughness ◽  
Strain Rate ◽  
Static Loading ◽  
Temperature Effects ◽  
Loading Condition ◽  
Temperature Shift ◽  
Evaluation Procedure ◽  
Practical Evaluation ◽  
Temperature Parameter ◽  
Properties Of Materials

Overview of the quantitative evaluation procedure of strain rate and temperature effects on fracture toughness proposed by the authors is introduced. Important concept of former researches is that the fracture toughness is a function of the strain rate-temperature parameter (R), which enables to unify both strain rate and temperature effects for the mechanical properties of materials. Using this knowledge, the equivalent temperature shift values at arbitrary strain rate from static loading condition are proposed.

Hardness

1984 ◽  
pp. 334-409
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Quality Control ◽  
Tensile Strength ◽  
Temperature Effects ◽  
Hardness Testing ◽  
Hardness Tests ◽  
Different Types ◽  
Hardness Conversion

Abstract Hardness tests provide valuable information about the quality of materials and how they are likely to perform in different types of service. This chapter covers some of the most widely used hardness testing methods, including Vickers, Rockwell, and Brinell tests, Shore scleroscope and Equotip hardness tests, and microindentation tests. It describes the equipment and procedures used, discusses the factors that influence accuracy, and provides hardness conversion equations for different types of materials. It also explains how hardness testing sheds light on anisotropy, machinability, wear, fracture toughness, and tensile strength as well as temperature effects, residual stress, and quality control.

Influence of Crack Orientation and Crosshead Speed on the Fracture Toughness of PVC Pipe Materials

2004 ◽  
Author(s):  
T. M. El-Bagory ◽  
M. S. El-Fadaly ◽  
M. Y. A. Younan ◽  
L. A. Abdel-Latif
Keyword(s):  
Fracture Toughness ◽  
Experimental Work ◽  
Engineering Application ◽  
Compact Tension ◽  
Specimen Thickness ◽  
Crosshead Speed ◽  
Operation Conditions ◽  
Pvc Pipe ◽  
Materials Used ◽  
Pipe Materials

In many modern engineering application designers and manufactures of Polyvinyl chloride (PVC) pipes are interested in the evaluation of fracture toughness under several operation conditions. The aim of the present work is to investigate the fracture toughness of commercial amorphous thermoplastic PVC materials used in pipes applications. The experimental work is carried out using three different specimens types: Taper Double Cantilever Beam (TDCB), Three Point Bend (TPB), and Compact Tension (CT). Tests are conducted on specimens with thickness (17,20,22, and 26 mm), longitudinal and transverse extrusion orientations, at different crosshead speeds (50–500 mm/min) to calculate the fracture toughness of PVC pipe materials. The experimental work has revealed that the crosshead speed has a significant effect on the fracture toughness at low speed rates. This effect, however, becomes insignificant at high rates since, the fracture behavior becomes brittle. The stress intensity factor KQ is approximately the same in both longitudinal and transverse orientations. The fracture toughness decreases as the specimen thickness increases.

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