Gyoujin Cho - Böcker

Within the last decade there has been an increasing awareness that use of standards deeply notched fracture mechanics test specimens can result in substantial over-or-under-assessments of the real fracture toughness associated with shallow surface cracks.

The proceedings of an international seminar organised by TWI in conjunction with the Paton Welding Institute, Ukraine and held at TWI Middlesbrough in April 1997. The delegates examined recent theoretical and practical developments of the materials, equipment and processes involved.

While computer systems have traditionally been used in welding engineering for modelling, equipment control, manufacturing support and production monitoring they are now becoming essential tools for information handling, quality control and education and training.The papers presented at this conference reflect the significant advances that have been made in emerging technologies, expert systems, neural networks and multimedia. The application of the innovative control systems and software presented here will enable companies to maintain a competitive edge by improving information control and product value while at the same time reducing manufacturing and production costs.The book is of value to both established and prospective users of computers in the welding industry and to all needing to keep in touch with the latest advances in computer technology.

With the explosion of e-commerce, and especially the use of the internet for business transactions, the "paperless office" should surely already have become a reality. Its progress has, however, been impede by tha lack of sufficient information security and a workable legal framework. So where are we now? Can we really trust electronic business transactions to be reliable, provable and enforceable, even on an international basis?Find the answers in this ground-breaking study undertaken for the European Commission. Carried out by the Interdisciplinary Centre for law and Information Technology of the Katholieke Universiteit Leuven, it provides a country-by-country review of the technology and deployment of electronic signatures. It also examines the legal and regulatory issues and the legal framework relating to their use in Europe and beyond.

Contains the following reports: A review of techniques to manage penetration variability during TIG welding; An appraisal of methods for quantifying the performance of ultrasonic inspection techniques for detecting and sizing weld flaws; Real time defect assessment from ultrasonic test data; Heat affected zone hydrogen cracking of C-Mn steels when welding with tubular cored wires.

Research carried out by TWI staff for The Welding Institute’s industrial members. This title includes diffractive optical elements for manipulation of CO2 laser radiation - a feasibility study; A review of joint tracking systems for laser welding; control of porosity in CO2 laser welds in C/Mn steel; the development of a solidification cracking test for carbon-manganese steel laser welds.

Research reports originally prepared for TWI’s Industrial Members.