Subscribe to our newsletter to receive the latest news and events from TWI:

Subscribe >
Skip to content

Fracture Toughness Testing Methods and Standards

Webinars 13 September 2022

TWI Webinar: Fracture Toughness Testing Methods and Standards

Time: 15.00-16.00, BST, UK

Fracture toughness – it’s important to get the testing right; but do you ever get confused between a CTOD test and a J R-curve test?

Is there a difference between the American and British standards for CTOD?

What does the reference temperature ,T0, mean?

Is a single edge notched tension specimen the same as a compact tension specimen?

Matt Haslett from TWI will provide information on the range of current national and international standards for fracture toughness testing.

This webinar will explain what’s covered in each standard, so you can compare where they differ and where there is commonality, allowing you to feel more confident in specifying which standard you wish to carry out your testing to.


Matthew Haslett CEng MIMechE FWeldI IWE - Team Leader - Environmental Testing

Matthew Haslett CEng MIMechE FWeldI IWE

Team Leader - Environmental Testing

Matthew is Team Leader - Environmental Testing in the Fatigue and Fracture Integrity Management Section, with experience in mechanical and structural engineering. His main areas of expertise lie in fracture toughness testing, mechanical testing, Engineering Critical Assessment (ECA), full-scale testing and bespoke mechanical testing.

Matthew has worked with a number of clients including Sellafield, Rolls-Royce (Nuclear), BAE Systems, ESA and Thales Underwater Systems and has prior work experience in Nuclear Engineering (REACT Engineering, working mainly at Sellafield), the Armed Forces (Royal Navy as a Marine Engineering Officer) and the Ministry of Defence (Operational Analyst).

Matthew also organises TWI’s training course on Structural Integrity Assessment to BS 7910 and lectures on the Design and Construction module of the EWF/IIW Welding Diploma.

For more information please email: