Critical Crack Tip Opening Displacement (CTOD) Testing: Part One

Crack tip opening displacement is widely used and quite specific in that it is the only standardized test that covers all fracture behaviors that occur between the extremes associated with the stress intensity factor K and J-integral tests. CTOD in relation with component load gives the opportunity to determine the crack driving force in the vicinity of the crack tip. Continue reading

Orbital Forging

Orbital forging is a compressive forging technique which uses the upper die to apply uniform forging effects throughout a rotating part. In order for orbital forging to be optimum a number of factors need to be controlled, just one example being the workpiece material including chemical composition, microstructure and deformability.
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Stress Relief of Steels

Stress in a component or metal part can be caused by a number of different factors including welding, machining, cutting, drilling and this may have a detrimental effect on the parts finished properties. There are a number of techniques to rectify stress related anomalies but the most basic parameters used to redistribute the effects of stress are a combination of time and temperature.
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