.... This paper presents the historical evolution of the standard and reflects on the strategies used to overcome the interferences of slow crack growth, R -curve, and stability. It draws parallels to the development of ASTM E 399, and it presents data that show good precision and accuracy for well-behaved...

... Dynamic fatigue or constant stress-rate testing is a convenient method for generating SCG (slow crack growth) data on ceramics and glasses. The tests are simple, inexpensive, and accomplished quickly. However, the use of dynamic fatigue testing to generate slow crack growth data for SCG...

... Slow crack growth (SCG) under plane strain conditions as measured by the PENT test is governed by the stress intensity, K. The PENT test, ASTM specification F 1473, which was originally designed to measure the resistance to SCG in pipes, fittings, and resins for conveying gas, can be used...

... laminate materials. fiber/metal laminates linear elastic fracture mechanics R -curve stress intensity factor slow crack growth residual strength fatigue (materials) fracture (materials) composite materials Ming WuI and Dale Wilson 2 Residual Strength of Metal-Matrix Laminated Panels...

... High temperature slow crack growth of a hot-pressed silicon nitride (NCX 34) was determined at temperatures of 1200 and 1300°C in air. Three different testing methods were utilized: dynamic and static fatigue with bend specimens, and static fatigue with dog-bone-shaped tensile specimens. Good...

... for delayed failure behavior in ceramics, depending on the material, microstructure, size of inherent flaws, and the level af applied stress. These delayed failure mechanisms are slow crack growth (SCG) and creep rupture. In this paper, a methodology to predict the lifetimes for sintered alpha silicon carbide...

... Most of the plastic gas distribution pipe now in service is polyethylene (PE). While this material has an excellent safety record, due to a variety of abnormal loadings that can arise in long-time service, some slow crack growth (SCG) related field failures have occurred. Accelerated test...

.... hydrogen embrittlement austenitic ferritic duplex stainless steels slow crack growth stress-induced martensite microstructure hydrogen transport T. Perng 1 and C. A l t s t e t t e r I Hydrogen Transport, Microstructure, and Hydrogen-Induced Cracking in Austenitic Stainless Steels REFERENCE...

.... It is pointed out that/jc measurements may overestimate the plane-strain fracture toughness, the ASTM E 813 size requirements being not restrictive enough. KEY WORDS: fracture criterion, size effect, cleavage, slow crack growth, J-integral, ferritic steels, ductile brittle transition, elastic-plastic...

..., (2) slow crack growth tests using fracture-mechanics specimens, and (3) the slow-strain-rate testing of straining electrode specimens. The corrosion conditions investigated include cathodic and anodic potentiostatic control and free-corrosion under constant-immersion and alternate-immersion...

... give very conservative results. elastic-plastic fracture J-integral J-R curves slow crack growth tearing modulus tearing instability compact specimens circumferentially cracked pipe specimens computer-controlled testing tearing instability arrest James A. Joyce I Instability Testing...

... with the spherical bearing on a flat plate. Formulas are given to scale the apparatus for different load ranges. ceramics compression spalling slow crack growth George Sines,' Tatsuo Okada,^ and Steve Mack^ Fixture for Accurate Load Path in Axial Compression REFERENCE: Sines, G., Okada, T., and Mack, S...

... extension) existed up to a certain temperature, in which the mode of crack propagation was primarily transgranular. Above this temperature, the strength (fracture stress) decreased considerably due to the presence of subcritical or slow crack growth (SCG) prior to the final catastrophic fracture...

... that double-torsion tests on small ceramic specimens at elevated temperatures may be used with confidence in determining K I - v relationships, either for failure prediction or in distinguishing between different slow-crack growth mechanisms. ceramics slow crack growth crack velocity stress...

... and measured final crack length was excellent using the key curve method. elastic-plastic fracture J-integral fracture toughness slow crack growth J-resistance testing HY130 steel unloading compliance key curve method tearing modulus fractures (materials) crack propagation / . A. Joyce...

... micromechanism. resistance curves instability J-contour-integral slow crack growth mechanical test methods fatigue (materials) crack propagation C. E. Turner^ Description of Stable and Unstable Crack Growth in the Elastic Plastic Regime in Terms of Jr Resistance Curves REFERENCE: Turner, C. E...

... of crack length. This allows tests to be run conveniently on opaque samples and in hostile environments. In addition, specimen and loading geometries are simple and easily adapted to most testing machines. Furthermore, specimens generally are precracked easily and slow crack growth data can be obtained...

... Experimental evidence showing the size dependence of J Ic in ferritic steels is presented. This behavior is described in terms of a relatively simple mechanistic model for cleavage fracture. It is shown that the mechanisms of cleavage fracture and ductile slow crack growth are always...