"How fibre-dominated strength of a multidirectional laminate relates to the strength of a UD composite’’ was discussed at the event which forms part of an online series where each workshop investigates measuring the strength of composite materials.
This is the sixth in a series, following on from previous events on Defining Strength in October 2020, Measuring Tensile Strength in March 2021, UD Compression Strength in October 2021, Shear Strength in March 2022 and Measuring Transverse Strengths in October 2022.
The workshop comprised of the topic presentations by Michael Wisnom, Yentl Swolfs and Federico Paris, followed by a series of short presentations and further discussion with people from across the globe participating.
For those who could not attend or would like to rewatch the content, a recording of the workshop is available to watch on the Bristol Composites Institutes YouTube channel. The PowerPoint presentations and the paper summarising the topic are available for download via the links below.
Laminate Failure Paper (PDF, 229kB)
Workshop Programme:
Meeting introduction: Yentl Swolfs - Workshop Briefing Slides (PDF, 202kB)
Topic Presentation:
- How fibre-dominated strength of a multidirectional laminate relates to the strength of a UD composite. Topic Presentation Slides (PDF, 1,036kB)
5 minute presentations:
- Experimental observations of the 90 degrees layer thickness in the strength of 0/90 laminates Elena Correa (PDF, 1,663kB) – University of Sevilla
- The effect of transverse cracking on longitudinal tensile strength Yentl Swolfs (PDF, 555kB) – KU Leuven
- Recent advances in UD failure simulation and its application to laminate strength Tomonaga Okabe (PDF, 2,235kB) – University of Tohoku
- Quasi-isotropic laminates, fiber failure or delamination? Christian Hochard (PDF, 2,005kB) – Aix-Marseille Université
- Predicting unnotched strength of QI laminates using UD strength and size effect laws Xiaodong Xu (PDF, 503kB) – University of the West of England
- The influence of edge delamination on coupon strength tests Richard Butler (PDF, 597kB) – University of Bath
- Simulating sub-critical transverse cracking and delamination in blocked un-notched specimens Silvestre Pinho (PDF, 758kB) – Imperial College London
- Tensile strength of thin-ply quasi-isotropic laminates: is controlled by fiber failure or by other mechanisms? Joel Cugnoni (PDF, 3,198kB) - Haute École d'Ingénierie et de Gestion du Canton de Vaud
- On the use of crossply and quasi-isotropic laminates to measure the unidirectional compression strength of composites Dan Adams (PDF, 719kB) – The University of Utah/Wyoming Test Fixtures
- Experimental and numerical study on the compressive failure of different carbon/thermoplastic multi-layered laminates Frédéric Laurin (PDF, 1,230kB) – ONERA
- Effect of off-axis ply orientation on 0-fibre microbuckling Costas Soutis (PDF, 692kB) – University of Manchester