Exact(2)
Now that it has been found -- and spray-painted with the word "Save" in florescent orange paint -- tests can be conducted to determine whether heat or stress or some design or material flaw might have let it fail.
A parametric study is carried out to investigate the effects of impact speed, head mass, initial material flaw, material fracture criterion, etc., and correlate them with the crack direction and length.
Similar(57)
Art restorers have long known how to repair those material flaws, so the experience of looking at a Vermeer or a Rodin remains basically unchanged over time.
"Although we are pleased that I.S.S. recognizes the thoroughness of the process undertaken by the MetroPCS board of directors, we strongly believe that I.S.S.' report contains material flaws and reaches the wrong conclusion," MetroPCS said in its statement.
Moreover, the method has shown the good robustness to the input image size, illumination, tilted specimen placement, and material flaws.
Furthermore, cast iron is a brittle material weak in tension, and there are many uncertainties in its mechanical properties at ambient and elevated temperatures due to material flaws.
The results indicate that material flaws within the domain lead to a significant decrease in fatigue lives and increase in life scatter.
Analysis of historical lessons learned for introduction of new material technologies suggests that appropriate application of fracture mechanics-based damage tolerance (DT) principles can offer an effective risk mitigation mechanism against the inherent material flaws, as well as manufacturing and service-induced defects.
Proceedings of the 6th International Conference of Offshore and Polar Engineers, Los Angeles '96, Vol. IV, pp. 502 509.], deals with the amount of energy required so that arbitrary crack propagation originates from microscopic material flaws of the steel structure, in areas of high strain concentration during large deflections.
Defects such as non-bonding or void formation can occur at very cold welding conditions, due to insufficient material flow, and flaws such as flash formation, collapse of the nugget within the stir zone and deterioration in the strength properties of the joint can occur at very hot conditions, due to excessive material flow (Annette 2007).
In most cases, the matrix fracture toughness can be assumed to be uniform throughout the material, but flaw sizes do vary in space.
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