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Author : John H. Underwood
Publisher : ASTM International
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.3/5 (91 download)
Download or read book Chevron-notched Specimens, Testing and Stress Analysis written by John H. Underwood and published by ASTM International. This book was released on 1984 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kevin R. Brown
Publisher : ASTM International
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.3/5 (91 download)
Download or read book Chevron-notch Fracture Test Experience written by Kevin R. Brown and published by ASTM International. This book was released on 1992 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author : J. Morrison
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (125 download)
Download or read book Comparison of Chevron-Notched Specimen Types for Fracture Toughness Testing of Aluminum written by J. Morrison and published by . This book was released on 1989 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is increasing interest in the use of chevron-notched specimens for the measurement of plane-strain fracture toughness. Attention has been focussed on the short rod/bar specimens, for which several different geometries have been proposed. This paper describes a series of tests on 6061-T651 aluminum alloy aimed at providing a comparison of five short rod/bar specimen types with three different thicknesses. Also included are data from standard compact-tension specimens.
Author : LM. Barker
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (125 download)
Download or read book Chevron-Notched Specimens for Fracture Toughness Measurements Independent of R-Curve Effects written by LM. Barker and published by . This book was released on 1989 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author :
Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (317 download)
Download or read book A Review of Chevron-notched Fracture Specimens written by and published by . This book was released on 1984 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : JW. Bray
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)
Download or read book Use of the Chevron-Notched Short Bar Test to Guarantee Fracture Toughness for Lot Release in Aluminum Alloys written by JW. Bray and published by . This book was released on 1992 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chevron-notched short bar fracture toughness (KIvM per ASTM E 1304) has been correlated with plane strain fracture toughness (KIc or KQ per ASTM E 399 or ASTM B 645) for commercial 2124-T851, 7050-T7451, 7050-T7651, and 7475-T7351 plate.
Author : ASTM Committee E-24 Staff
Publisher : ASTM International
ISBN 13 : 9780803101050
Total Pages : 430 pages
Book Rating : 4.1/5 (1 download)
Download or read book Fracture Toughness Testing and Its Applications written by ASTM Committee E-24 Staff and published by ASTM International. This book was released on 1981-10 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : XC. Yin
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (125 download)
Download or read book New Formulae for Determining Fracture Toughness of a Wide Range of Different Materials with Chevron-Notched Short-Rod and Short-Bar Specimens written by XC. Yin and published by . This book was released on 1992 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: New formulae are presented to re-evaluate plain strain fracture toughness of brittle and ductile materials from previous works on chevron-notched specimens. The fracture toughness KIm from the new formulae agree with values of KIC from ASTM specimens. The KIm measurements are successful in tests of tough aluminum when the fracture toughness exceeds 40 MPa . m1 2 and steel 20G with the plasticity factor p approach 1. It is found that the valid specimen size could be smaller than 1.25(KIC/?S)2 for aluminum alloys, and even less than 0.1(KIC/?S) for steel 20G when the KIm formulae are used.
Author : DG. Munz
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (125 download)
Download or read book Specimen Size and Geometry Effects on Fracture Toughness of Aluminum Oxide Measured with Short-Rod and Short-Bar Chevron-Notched Specimens written by DG. Munz and published by . This book was released on 1984 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plane-strain fracture toughness measurements were made on aluminum oxide using short-rod and short-bar chevron-notched specimens previously calibrated by the authors for their dimensionless stress intensity factor coefficients. The measured toughness varied systematically with variations in specimen size, proportions, and chevron notch angle apparently due to their influence on the amount of crack extension to maximum load (the measurement point). The toughness variations are explained in terms of a suspected rising R-curve for the material tested, along with a discussion of an unavoidable imprecision in the calculation of KIc for materials with rising R-curves when tested with chevron-notched specimens.
Author : D. Munz
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (125 download)
Download or read book Performance of Chevron-Notch Short Bar Specimen in Determining the Fracture Toughness of Silicon Nitride and Aluminum Oxide written by D. Munz and published by . This book was released on 1980 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ease of preparation and testing are advantages unique to the chevron-notch specimen used for the determination of the plane strain fracture toughness of extremely brittle materials. During testing, a crack develops at the notch tip and extends stably as the load is increased. For a given specimen and notch configuration, maximum load always occurs at the same relative crack length independent of the material. Fracture toughness is determined from the maximum load with no need for crack length measurement. Chevron notch acuity is relatively unimportant since a crack is produced during specimen loading. In this paper, the authors use their previously determined stress intensity factor relationship for the chevron-notch short bar specimen to examine the performance of that specimen in determining the plane strain fracture toughness of silicon nitride and aluminum oxide.
Author : John Gilbert Kaufman
Publisher : ASM International
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fracture Resistance of Aluminum Alloys written by John Gilbert Kaufman and published by ASM International. This book was released on 2001 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kaufman prevents this summary of data on the fracture characteristics of aluminum alloys, broadly based on a publication by Alcoa in 1964, Fracture Characteristics of Aluminum Alloys . Coverage includes tensile properties as indicators of fracture behavior; notched-bar impact and related tests for t
Author : KR. Brown
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)
Download or read book The Use of the Chevron-Notched Short-Bar Specimen for Plane-Strain Toughness Determination in Aluminum Alloys written by KR. Brown and published by . This book was released on 1984 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive study of the use of the chevron-notched short-bar (CNSB) specimen for measuring plane-strain fracture toughness in high-strength aluminum alloys is reported. The toughness measured in a CNSB specimen, KSB, correlates closely with plane-strain fracture toughness, KIc, for toughnesses less than 35 MPa m1/2. At higher toughnesses KSB is higher than KIc for two reasons; first, sample heterogeneity causes the different sized specimens to sample different material, and second, an effect of rising crack growth resistance in the toughness range 40 to 55 MPa m1/2; these latter test results should be considered invalid; however, within this range the KIc, KSB correlation, although largely empirical, is still useful for screening purposes.
Author :
Publisher : ASTM International
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4./5 ( download)
Download or read book Fracture Toughness Evaluation by R-curve Methods written by and published by ASTM International. This book was released on 1973 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : KJ. KarisAllen
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (125 download)
Download or read book Specimen Size and Orientation Effects in Chevron-Notch Fracture Testing of Aluminum Alloy Plate written by KJ. KarisAllen and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Side grooving of specimens can have a pronounced effect on the fracture behavior of aluminum alloys during plane-strain fracture tests. The first part of this paper describes an investigation of the effect of different amounts of side grooving on KIc determined using compact specimens of varying thicknesses machined from a 6061-T651 plate. The results are also related to KIv measurements made on the same material and are discussed in terms of rising R-curve effects on compact and short-bar fracture specimens.
Author :
Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (227 download)
Download or read book Comparison of Fracture Toughness Values Obtained Using Semi-Infinite Aluminum Plates with Values Obtained Using Laboratory Size Specimens written by and published by . This book was released on 1969 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture toughness values obtained from small laboratory size specimens in four point slow-bend loading were compared with values obtained in testing large semi-infinite center notched plate specimens.
Author : Anthony Martin Calomino
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (317 download)
Download or read book Compliance Measurements of Chevron Notched Four Point Bend Specimen written by Anthony Martin Calomino and published by . This book was released on 1994 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Edward Campbell
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.3/5 (91 download)
Download or read book Current Tests for Evaluating Fracture Toughness of Sheet Metals at High Strength Levels written by James Edward Campbell and published by . This book was released on 1960 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
