Which term describes the pressure at which a hydraulic component fails due to internal stresses?

• A. Breaking Pressure
• B. Hydraulic Failure Point
• C. Internal Stress Limit
• D. Burst Pressure

Answer: (D)

Burst pressure describes the pressure at which a hydraulic component fails due to internal stresses. As pressure increases, the wall of a hose, cylinder, or fitting experiences hoop stress; when that stress exceeds the material’s strength (considering thickness, flaws, and safety factors), the wall ruptures. This term is the standard way engineers refer to the ultimate limit before catastrophic failure under internal pressure, and it’s used to set ratings and safety margins. The other phrases aren’t used in this context: they don’t denote a specific, recognized failure pressure under internal hydraulic stress, whereas burst pressure specifically captures the rupture point caused by internal pressure.