References

ASME BPVC-IX-2013, 2013. Welding, Brazing and Fusing Qualifications. The American Society of Mechanical Engineers, New York, USA.,.

ASTM E92-82 (1997)e3, 1997. Standard test method for vickers hardness of metallic materials. ASTM International, West Conshohocken, Pennsylvania, USA. https://www.astm.org/DATABASE.CART/HISTORICAL/E92- 82R97E3.htm

Chandler, H., 1999. Hardness Testing. 2nd Edn., ASM Internasional, USA., ISBN: 9781615032211, Pages: 192.

Halmshaw, R., 1995. Industrial Radiology: Theory and Practice. 2nd Edn., Chapman and Hall, London, UK., ISBN: 9780412627804, Pages: 303.

Jeffur, L., 2012. Welding: Principles and Applications. 7th Edn., Delmar Cengage Learning, Clifton Park, New York, USA., ISBN-13: 978- 1-1110-3917-2, Pages: 972.