Pull-out experiments were performed on three carbon fiber-reinforced polymer (CFRP) ground anchors simulating their applications in different rock types which provided different confinement levels. The CFRP tendons comprised, on the ground side, a prefabricated conical anchor body of high-strength grout in which two CFRP straps were embedded. The anchors reached an average load-bearing capacity...

The defect detection capabilities of transient thermography and shearography have been compared using optimum excitation methods for each technique: short pulse heating for thermography and vibration excitation using a piezoelectric transducer for shearography. A signal-to-noise ratio and limit of detection analysis has been performed on defect images obtained by the two techniques using the di...

Guided-wave structural health monitoring (SHM) systems with piezoelectric sensors are investigated for localisation of barely visible impact damage in CFRP plates under vibration and different thermal conditions. A single baseline set is used in a delay-and-sum algorithm with temperature correction for damage localisation in a large temperature range. Damage localisation is also demonstrated un...

Innovative advancements in bedside applications can save, extend, and improve the quality of life for patients worldwide. Innovation addresses specific unmet needs when evaluated clinically for safety and efficacy. However, the process does not stop there. A post-market surveillance program is usually in place to address design and performance issues surfacing post product release, which is fur...

In conventional manufacturing processes of composites, Carbon Fibre Reinforced Plastic (CFRP) laminates have been made by stacking unidirectional or woven prepreg sheets. Recently, as a manufacturing process of CFRP, 3D printing of CFRP composites has been developed. The 3D printing process of CFRP composites enables us to fabricate CFRP laminates with arbitrary curvilinear fibre plies. This in...

Weight reduction is often a key factor in modern mechanical design, therefore materials such as carbon fibre reinforced plastics (CFRP) are increasingly used and integrated within multi-material structures using adhesive technologies, which require high effort difficult to disassemble. The capability of blind rivet nut (BRN) join different without these disadvantages has created growing industr...

Cutting processes of carbon fibre reinforced polymer (CFRP) material generate significant energy in the form heat which can be detrimental to final surface and sub-surface quality. By artificially changing temperature workpiece simulate cutting temperatures, thermal effects on friction metrics understood. Feed rate CFRP pre-heating for macro nanoscale open loop pin plate testing has been comple...

Enhancing the impact resistance performance of carbon fiber-reinforced polymer (CFRP) laminates stands as a prominent research focus among various nations. Existing studies have shown tendency towards arbitrary selection inter-ply helix angle values in CFRP laminates, which is accompanied by limited number samples representing chosen angles. However, existing relatively random spiral between an...

Hierarchical carbon-nanotube (CNT)-based composites have significant potential to expand the performance and functionality of aerospace composite structures. Notably, circumferentially aligned CNT arrays have previously been grown on woven alumina filaments to form a "fuzzy fiber" reinforced plastic (FFRP) architecture with demonstrated improvements in interand intra-ply mechanical properties a...