Auto-frettage definition

Auto-frettage means a pressure application procedure used in manufacturing composite cylinders with metal liners, which strains the liner past its limit of elasticity, sufficiently to cause permanent plastic deformation which results in the liner having compressive stresses and the fibres having tensile stresses at zero internal pressure.
Auto-frettage. A pressure application procedure used in manufacturing composite cylinders with metal liners, which strains the liner past its limit of elasticity, sufficiently to cause permanent plastic deformation which results in the liner having compressive stresses and the fibers having tensile stresses at zero internal pressure.
Auto-frettage means a pressure application procedure used in manufacturing composite containers with metal liners, which strains the liner past its yield point sufficiently to cause permanent plastic deformation, which results in the liner having compressive stresses and the fibres having ten­ sile stresses at zero internal pressure;