stress raiser

stress raiser

[′stres ‚rā·zər]
(metallurgy)
A notch, hole, or other discontinuity in contour or structure which causes localized stress concentration.

stress raiser

stress raiser
A stress raiser on a propeller. A nick of this size means that the propeller will need to be either discarded or sent back to the manufacturer.
A sharp nick on a propeller. It is so called because the stresses can be concentrated on the point of the nick, possibly causing the structural failure or the loss of a propeller tip, extreme vibration, and loss of control.
References in periodicals archive ?
The stress variation in the area of the stress raiser is shown in Fig.
The sharp corner on the casting is a stress raiser that cracked on machining.
c) Reducing stress raisers by eliminating contamination and preventing damage caused during mounting will minimise the risk of surface distress.
Minimize stress points by eliminating stress raisers, kinks, mold seams, knit lines and other break points.
The cracks act as stress raisers, causing stress concentration that inhibits the comprehensive deformation mechanisms in PC.
The resilient middle layer absorbs the bending force, reducing stress raisers, which can break the outer layer, ensuring the anti-corrosion inner layer is well protected (Figure 5).
Solution Accuracy: Improved mesh quality around critical boundaries and stress raisers with a new quadrilateral element meshing option.
On medium volume batch production, this new process gives the cores a 2mm Ra (roughness average) finish that translates to an even finer surface inside the cast components: It is proving ideal for casting galleries in aluminium pistons of diesel engines, where a fault-free surface is needed to eliminate stress raisers and a smooth precision shape is required for efficient oil flow.
Stress raisers are frequently a preferred site for fracture origin, particularly in fatigue.
With thinner casting walls, the smooth casting surface is necessary to eliminate stress raisers.
Stress raisers in design should be avoided to reduce the possibility of fracturing.