IIW 2018 Annual Report

C-VI / Terminology / Dr Glenn Ziegenfuss , Execu- tive Director retired for the Standards Engineering Society – USA

safety, noise and requirements for the eco-design of welding equipment. C-IX / Behaviour of Metals Subjected to Welding / Dr Hee Jin Kim , Korea Institute of Industrial Tech- nology (KITECH) – Republic of Korea

Commission VI has accep- ted the primary responsi- bility for welding termino- logy from ISO/TC 44, CEN/ TC 121, and IIW. The Com- mission works collabora- tively with ISO/TC 44/SC 7 on several parts of ISO/ TR 25901 Welding and al-

Welding metallurgy is the central interest in Commission IX, with a continuing focus on High-strength Low-al- loy (HSLA) steels, stain- less steels, Ni-alloys, creep-resistant steels and non-ferrous alloys

lied processes -- Vocabulary, having published three parts (Part 1 covering general terms, Part 3 covering welding processes, and Part 4 covering arc welding). The current work programme consists of terms and definitions for welding health and safety, laser wel- ding, plastics welding, and thermal cutting. Future items will include terms and definitions for electron beamwelding, brazing, and soldering. C-VII / Microjoining and Nanojoining / Prof. Akio Hi- rose , Osaka University – Japan

like Al- and Mg-alloys. Of note during the year was the increasing number of contributions on the characteristics of weld microstructure associated with the very fast cooling rates of laser welding. In addition, the metallurgical aspects of Additive Manufacturing is seen to be an important area for Commission IX in the future, in cooperation with other Commissions which are considering Addi- tive Manufacturing processes and, to a lesser de- gree, the materials involved. C-X / Structural Performances of Welded Joints - Fracture Avoidance / Prof. Dr- Eng. Fumiyoshi Minami, Director, Joining & Welding Research Institute (JWRI), Osaka University - Japan The Commission X

This Commission focuses on microjoining and nano- joining and other related materials processing technologies at micro- and nano-scales. Our group achieved extensive successes at the 2018 IIW 71st Annual Assembly.

continued its work on the development of fitness-for-service (FFS) procedures. A FFS as- sessment procedure for steel components under seismic conditions was standardised as WES

Five half-day sessions (two in the Commission VII workshop, one as a joint meeting with Commission XVII and two as a joint meeting on Additive Manufac- turing with Commissions I, IV, XII and Study Group 212) included 37 presentations. The Commission members also organised the International Confe- rence on Nanojoining and Microjoining 2018 in Nara, Japan in December as an intermediate meeting of this Commission. C-VIII / Health, Safety and Environment / Eur.-Ing. Geoff Melton , Technology Manager at TWI Ltd – UK

2808-2017 (Japan Welding Engineering Standard). A new Crack Tip Opening Displacement (CTOD) formula for fracture toughness evaluation was also implemented into ISO 15653-2018 Metallic materials -- Method of test for the determination of quasistatic fracture toughness of welds. The Working Group on Welding Residual Stresses in Thick Steel Structures reported on its work over the past five years. The numerical procedure for the analysis of the residual stress profile in thick welds was recommended as a topic for publica- tion. After a sufficient discussion and common understanding of the group’s results, a guideline will be drawn up for the measurement and analy- sis of residual stresses in thick steel components. Commission X also participated in two joint mee- tings with other Commissions on Fatigue Design, Assessment and Testing, and Non-destructive Evaluation, Mechanical Properties and Additive Manufacturing technology.

Welding fume continues to dominate the activi- ties of this Commission. Occupational exposure limits for the constituents of welding fume are being reduced so the welding industry needs to unders- tand the mechanisms and

improved ways of controlling exposure. In 2018 the International Agency for Research on Cancer pu- blished Monograph 118, classifying fume and UV radiation from welding as Group 1 carcinogens. The IIW response to this will be a topic for future mee- tings. As well as welding fume, other topics during the year included electromagnetic fields, electrical

13 ANNUAL REPORT 2018 IIW