Author: John H. UnderwoodPublisher: ASTM International
ISBN: 9780803104013
Category : Technology & Engineering
Languages : en
Pages : 353
Book Description
Chevron-notched Specimens, Testing and Stress Analysis
Author: John H. UnderwoodPublisher: ASTM International
ISBN: 9780803104013
Category : Technology & Engineering
Languages : en
Pages : 353
Book Description
Chevron-notch Fracture Test Experience
Author: Kevin R. BrownPublisher: ASTM International
ISBN: 080311480X
Category : Fracture mechanics
Languages : en
Pages : 200
Book Description
Reviews the latest information and experimentation on the fracture-toughness testing of materials using specimens that are chevron notched, a procedure that has been an ASTM standard only since December 1989. The 13 papers were presented at a symposium in Indianapolis, May 1991; they include studies
Chevron-notched Specimens
Author: J. H. UnderwoodPublisher:
ISBN:
Category : Notched bar testing
Languages : en
Pages : 0
Book Description
A Review of Chevron-notched Fracture Specimens
Author: Closed-form Expressions for Crack-mouth Displacements and Stress Intensity Factors for Chevron-notched Short Bar and Short Rod Specimens Based on Experimental Compliance Measurements
Author: Chevron-Notched Specimens for Fracture Toughness Measurements Independent of R-Curve Effects
Author: LM. BarkerPublisher:
ISBN:
Category : Chevron-notched specimens
Languages : en
Pages : 6
Book Description
A relatively new plane-strain fracture toughness test method based on chevron-notched test specimens has created a keen interest in comparing toughness measurements by the new method against measurements by the conventional method (ASTM E 399). Tests of various aluminum alloys by the two methods have shown a divergence in test results at the higher toughness levels. The rising R-curve effect in tough aluminums has been cited as one of the factors contributing to the observed discrepancy. This paper shows why the chevron-notched test results are independent of rising R-curve effects, whereas ASTM E 399 tests often are not. The E 399 test dependence on the rising R-curve constitutes a specimen size effect, and this dependence is partly responsible for the divergence between chevron-notched and E 399 tests of tougher aluminums. The chevron-notched method produces the toughness values which would be obtained from E 399 measurements if sufficiently large E 399 specimens could be tested.
Three-dimensional Finite-element Analysis of Chevron-notched Fracture Specimens
Author: Compliance Measurements of Chevron Notched Four Point Bend Specimen
Author: Anthony Martin CalominoPublisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 26
Book Description
Discussion of "Chevron-Notched Specimens for Fracture Toughness Measurements Independent of R-Curve Effects," with Author's Closure
Author: D. MunzPublisher:
ISBN:
Category : Light water reactors
Languages : en
Pages : 2
Book Description
Compliance and Stress-Intensity Factor of Chevron-Notched Three-Point Bend Specimen
Author: W. Shang-XianPublisher:
ISBN:
Category : Compliance
Languages : en
Pages : 17
Book Description
An analytical dimensionless compliance formula and normalized load versus load-point displacement plot of chevron-notched three-point bend specimen are derived by use of Bluhm's slice model. The stress intensity factor coefficients are calculated for specimen geometries of W/B = 1.5 and 2, ? = 40° to 90°, and are fitted as polynomials. Fracture-toughness values KIcv of two heat-treatment conditions of GCr15 bearing steel are determined by chevron-notched specimens and compared with the ASTM E 399 valid fracture-toughness values. The comparisons show that for GCr15-I specimens with flat R-curves, KIcv and KIc are in agreement, but for the GCr15-IV specimens with rising R-curves, KIcv are near to Kmax, instead of KIc. The effect of machining tolerance of chevron notch on the measurements is analyzed.