1. Z.Z. Luo, C.T. Zhang , Y. Yang et al. Cause Analysis of Foreign Pipeline Failures and Suggestions on Domestic Pipeline Management. GAS & HEAT,3(2011)29-32.
2. J. Tang, W.Q. Wang. The application of the Stress-Strain Microprobe technology in pipeline security and detection.Oil and gas pipeline safety.The fifth international convention of safety of oil and gas pipeline and the fifth conference on natural gas pipeline technology.Beijing petroleum institute, BeiJing, 2012,pp.5-9.
3. F.M. Haggag, G.E. Lucas . Determination of lüders strains and flow properties in steels from hardness/microhardness tests . Metallurgical and Materials Transactions A, 14(1983): 1607-1613.
4. F.M. Haggag. Field indentation microprobe for structural integrity evaluation, United States Patent: 4852397 . 1989-08-01.
5. J. Tang. Research on the Measurement of Mechanical Properties of Structural Steels and Those Affected by Strain Aging through Automated Ball Indentation Test. School of Mechanical Engineering, Shandong University, 2013.