Construct · 1 fields · 1 citations

peening: a standalone construct

One name. One construct. A landmark on the map.

● anchor · surface compressive-stress treatment Nearest construct by meaning·not indexed
peening1 CONSTRUCTShot peeningWOHLFAHRT · COMPRESSIVE STRESS

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Metallurgy / surface engineering

Cold-working a surface to press in compressive stress

Peening is the cold working of a metal surface by repeated impact (by a hammer's ball-peen, or in modern practice by a stream of shot), which plastically stretches the outer layer and leaves it in residual compression. Because fatigue cracks initiate under tension at the surface, this engineered compressive layer delays cracking and markedly extends fatigue life. Wohlfahrt's Shot peening and residual stresses sets out how the treatment generates and distributes those stresses. The referent is a surface treatment that deliberately induces beneficial compressive residual stress.[1]

Unit
The magnitude and depth of induced compressive residual stress
Recovery means
Not applicable
Measured by
Characterised by the magnitude and depth of compressive residual stress (e.g., by X-ray diffraction) and the resulting improvement in fatigue life

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Nearby constructs

compression4 fields · 5 citationsjingle · one word, four kinds of squeezefatigue4 fields · 4 citationsjingle · one word, four different declines

References

  1. Wohlfahrt, H. (1982). Shot peening and residual stresses. In Residual stress and stress relaxation (pp. 71–92). Springer. https://doi.org/10.1007/978-1-4899-1884-0_6

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