Hoop stress, abbreviated as \( \sigma_h \) (Greek symbol sigma), is the circumferential and perpendicular stress to the axis imposed on a cylinder wall when exposed to an internal pressure load.
- Factors and conditions affecting pipe wall thickness:
- Three stresses that will cause failure in pipe:
- Axial stress \(h\)
- Hoop stress \(\theta\)
- Radial stress \(r\)