The dependence of rapid crack propagation in polyethylene pipes on the plane stress fracture energy of the resin

2001 ◽  
Vol 41 (7) ◽  
pp. 1140-1145 ◽  
Author(s):  
Norman Brown ◽  
Xici Lu
Keyword(s):  
Crack Propagation ◽  
Fracture Energy ◽  
Stress Fracture ◽  
Plane Stress ◽  
Rapid Crack Propagation ◽  
Polyethylene Pipes

scholarly journals A simplified method to determine resistance to rapid crack propagation in polyethylene pipes

2017 ◽  
Author(s):  
Yu. Yu. Fedorov ◽  
S. N. Popov ◽  
A. V. Savvina ◽  
S. V. Vasilyev ◽  
A. K. Rodionov
Keyword(s):  
Crack Propagation ◽  
Rapid Crack Propagation ◽  
Polyethylene Pipes ◽  
Simplified Method

The average fracture energy accompanying rapid crack propagation

1974 ◽  
Vol 10 (2) ◽  
pp. 299-302 ◽  
Author(s):  
R. G. Hoagland ◽  
A. R. Rosenfield
Keyword(s):  
Crack Propagation ◽  
Fracture Energy ◽  
Rapid Crack Propagation

Determination of Fracture Toughness and K-R Curve for 2524-T3 Aluminum Alloy

2011 ◽  
Vol 291-294 ◽  
pp. 1039-1042
Author(s):  
Wei Xie ◽  
Shao Wei Tu ◽  
Qi Qing Huang ◽  
Ya Zhi Li
Keyword(s):  
Fracture Toughness ◽  
Aluminum Alloy ◽  
Stress Fracture ◽  
Test Data ◽  
Plane Stress ◽  
Crack Extension ◽  
Room Temperature ◽  
Mode I ◽  
Average Value

In the present work, the resistance to crack extension of 2524-T3 aluminum alloy under Mode I loading was studied by using the middle-cracked tension M (T) specimens. The curve, plane-stress fracture toughness and apparent plane-stress fracture toughness were calculated by test data. The average value of measured fracture toughness at room temperature was 161 MPam1/2. The results and conclusions can be referred in airplane skin design.

Features of failure for steel St. 3 connected with rapid crack propagation

1989 ◽  
Vol 21 (4) ◽  
pp. 441-443
Author(s):  
G. V. Klevtsov ◽  
A. G. Zhizherin ◽  
G. V. Stepanov ◽  
V. A. Makovei
Keyword(s):  
Crack Propagation ◽  
Rapid Crack Propagation

The Comparison of Self-Compacting Rock-Filled Concrete with Large-Size Natural and Recycled Aggregate

2014 ◽  
Vol 513-517 ◽  
pp. 20-23
Author(s):  
Hai Chao Wang ◽  
Xue Hua Wang ◽  
Xue Hui An
Keyword(s):  
Fracture Toughness ◽  
Crack Propagation ◽  
Fracture Energy ◽  
Fracture Mechanism ◽  
Recycled Aggregate ◽  
Propagation Process ◽  
Fracture Characteristics ◽  
Three Point Bending ◽  
Large Size ◽  
Crack Propagation Process

The different fracture characteristics of self-compacting rock-filled concrete with large-size natural and recycled aggregate are analyzed by three-point bending experiment. According to the analysis of the crack propagation process, the fracture mechanism differences of self-compacting rock-filled concrete with large-size natural and recycled aggregate are discussed. The further analysis of the differences of fracture toughness, fracture energy, and are gain

scholarly journals An Experimental Study of Fracture Toughness for Nano/Ultrafine Grained Al5052/Cu Multilayered Composite Processed by Accumulative Roll Bonding

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
D. Rahmatabadi ◽  
B. Mohammadi ◽  
R. Hashemi ◽  
T. Shojaee
Keyword(s):  
Fracture Toughness ◽  
Stress Fracture ◽  
Plane Stress ◽  
Accumulative Roll Bonding ◽  
Uniaxial Tensile ◽  
Roll Bonding ◽  
Multilayered Composite ◽  
Maximum Value ◽  
Ultrafine Grained ◽  
Pure Cu

In this study, ultrafine grained Al5052/Cu multilayered composite has been produced by accumulative roll bonding (ARB) and fracture properties have been studied using plane stress fracture toughness. The fracture toughness has been investigated for the unprocessed specimens, primary sandwich and first, second, and third cycles of ARB process by ASTM E561 and compact tension (CT) specimens. Also, the microstructure and mechanical properties have been investigated using optical microscopy, scanning electron microscopy, uniaxial tensile tests, and microhardness measurements. The value of plane stress fracture toughness for the ultrafine grained Al5052/Cu composite increased by increasing the number of ARB cycles, continuously from the primary sandwich to end of the third cycle. The maximum value of 59.1 MPa m1/2 has been obtained that it is about 2.77 and 4.05 more than Al5052 and pure Cu (unprocessed specimens). This phenomenon indicated that ARB process and the addition of copper to aluminum alloy could increase the value of fracture toughness to more than three times. The results showed that by increasing the ARB cycles, the thickness of copper layers reduced and after the fifth cycle, the excellent uniformity of Cu layers achieved. By increasing the number of ARB cycles, the microhardness of both aluminum and copper layers have been significantly increased. The tensile strength of the sandwich has been enhanced continually, and the maximum value of 566.5 MPa has been achieved.

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