...Wael Mahmood; Ahmed Salih Mohammed; Panagiotis G. Asteris; Hawreen Ahmed This study tested and quantified the stress-strain behavior, elastic modulus, and toughness of self-compacted cement paste. The characteristics of self-compacted flowable cement paste modified with two types of polymer up...

...Barry D. Davidson Research is described that supports the approach used in the new ASTM International standard for the determination of the mode II interlaminar fracture toughness of unidirectional polymer matrix composites. Reasons for choosing the end-notched flexure (ENF) test over other...

..., tensile strength ratio (TSR), rut depth, deformation, toughness, as well as fatigue life were measured and computed for all mixtures. The test results indicated that various compaction technologies would slightly affect the Superpave mix design and obviously have an influence on gyration number, ITS...

... strength and elastic modulus from the conventional concrete tests. Toughness determined by the area under the stress-strain plot up to the maximum stress was found to be capable of differentiating concretes containing different percentage of RAP. The IDT strengths of concrete were seen to decrease...

...Kyu-Seok Yeon; Sungun Kim; Hyong-Jong Lee; Kwang W. Kim The tensile strength (S t ) of warm-mix asphalt (WMA) and hot-mix asphalt (HMA) concretes were measured by indirect tensile strength test at 25, 5, −5, −15, −25 and −35°C. Fracture toughness (T u ) was calculated from each of the S t test...

... the loading rate in ASTM C1609 should be reduced or a minimum fiber dosage rate for which the test is valid should be specified. 28 10 2011 25 03 2013 27 08 2013 fiber reinforced concrete loading rate toughness instability References Bentur , A. and Mindess , S...

...Zhengwu Jiang; Nemkumar Banthia The influence of specimen size on measured flexural toughness of fiber reinforced concrete (FRC) remains largely unknown. Towards this end, an experimental program was carried out where flexural toughness tests were performed on specimens of two different sizes using...

.... These will be reinserted into the reactor both for the surveillance program and potential plant life extension. 06 07 2006 17 04 2007 11 06 2007 embrittlement fracture toughness surveillance stud welding References Final Report ATI -021-030-2003-1, “ Master Curve Fracture Toughness...

...N Banthia; S Mindess The major advantage of fiber-reinforced concrete (FRC) over its plain counterpart is in its improved energy absorption capability, or ‘toughness.’ There are currently several standard test methods available to characterize the toughness of fiber-reinforced concrete, but little...

...G Laird, II Repetitive-impact and impact toughness tests provide two distinct measures of a material's ability to resist impact-related wear phenomena. These tests are described in detail and results are presented for a variety of cast and forged wear-resistant alloys. In particular, past research...

...AM Kumar; JP Hirth; R Hoagland; X Feng This article describes a test procedure to measure mixed mode I–III fracture toughness. The traditional compact tension specimen geometry is modified to include an angled crack slot. This angle is varied to produce various mode I/mode III ratios. A further...

... toughness key curve References Landes , J. D. and Herrera , R. , “ A New Look at J-R Curve Analysis ,” International Journal of Fracture , Vol. 36 , 1988 , pp. R9 - R14 . Herrera , R. and Landes , J. D. , “ A Direct J-R Curve Analysis of Fracture Toughness Tests...

... relaxation tests to obtain a unique set of material property data relating stress and plastic strain rate. Within the context of these theories, a methodology for assessing the long-term toughness, strength, and ductility of Cr-Mo-V rotor steel alloys is demonstrated in this paper using a series of short...

...K Kimura; T Inukai; K Saito; H Kashiwaya Embrittlement was investigated for five retired and three laboratory-aged steam turbine rotors by sampling Charpy V-notch test coupons and testing them. A nondestructive evaluation method of toughness degradation was discussed. The investigation has revealed...

... participants usingthe compact configurationspecimen. The results of these tests are summarized herein, and a Precision and Accuracysection given along with variability at four levelsof effectivecrack growth. KEY WORDS: fracture, fracture testing, toughness,toughnesstesting, R-curves, stress intensity, crack...

... specimens. This paper presents R -curves and K c data for two materials as determined from both specimen types. A discussion of the results is included. fracture fracture testing toughness toughness testing R -curves stress intensity crack growth resistance plane stress fracture toughness...

...F-H Huang Fracture toughness tests on subsized, circular, compact tension specimens of ferritic alloys were performed at temperatures ranging from −192 to 427°C. Test results for 9Cr-1Mo show that the electropotential single specimen method agrees well with the multiple specimen method...

...AK Shoemaker; RR Seeley A task group designated ASTM E24.01.06 conducted round robin tests to estabish guidelines for preparing a test specification for rapid-loading plane-strain fracture-toughness testing, K Ic( ) (the time of the test from zero to maximum load, in milliseconds, is included...

... the feasibility of establishing standard design curves for the purpose of predicting changes in the toughness properties of reactor pressure vessel materials as a result of exposure to neutron irradiation. It is based on a statistical treatment of irradiation data available as of November 1977. Since...

..., Tempering, and Aging of Chromium-Molybdenum-Vanadium Cast Steels ” in the Journal of Evaluation and Testing , Vol. 9, No. 2, March 1981. steel castings aging (metallurgy) embrittlement steam turbine casings service life toughness crack propagation critical defect References Coulon , P...