1PARIS P C, HAYDEN B R. A new system for fatigue crack growth measurement and control [C]// ASTM Symposium on Fatigue Crack Growth. Pittsburgh, PA:[s. n. ],1979.
2PETER K L, HELM E J, ENGING. Corrosion fatigue crack propagation testing with KRAK-GAGE in salt water[J]. Fract Mech, 1983,18: 121-131.
3HARTMANN H R , CHURCHILL R W. Krakgage, a new transducer for crack growth measurements[C]// SESA Fall Meeting. Keystone, CO: [s.n. ], 1981.
4PETER K L, WILLIAM A L, LEWIS D R, et al. Krak-gages for automated fatigue crack growth rate testing[C]// Automated Test Methods for Fracture and Fatigue Crack Growth(STP877). [s. l. ]: [s. n, ], 1985:177-196.
5PHOPLONKER M A, BYRNE J, DUGGAN T V, et al. Near-threshold fatigue crack growth in aluminum bronze alloy[J]. ImeehE, 1986,C227:137-144.
6MCRAE K I. Application of "Fractomat/Krak-gage" to Crack Growth Measurement in Structural Component[M]. Victoria, B. C, Canada:Defenee Research Establishment Pacific, Research and Development Branch, 1982.
7PRABHAKARAN, RAMAMURTHY. Method of Continuously Determining Crack Length: U. S. , 5, 227,731[P]. 1993-07-13.
8NICHOLLS, JOHN Rayment. Measuring Device: U. S. ,6,172,511[P]. 2001-01-09.