This paper addresses the characterisation of mode I interlaminar fracture toughness a carbon fibre/epoxy composite material, toughened with thermoplastic particles in ply interlayers. The is undertaken at −55 °C, 19 and 90 on both dry fully moisture saturated coupons. Fractographic observations delamination surfaces allows identification failure mechanisms. propagation tested wet/90 °C exhibits...

The use of Carbon Fiber–Reinforced Polymers (CFRP) has increased in number of industries i.e. aerospace, automobiles, marine, medical and sports due to their light weight and high strength-stiffness. However, their properties are greatly affected under extreme e environmental conditions i.e. high temperatures and moisture uptake. The paper reports an experimental study to determine the response...

The efficacy and mechanism of killing bacterial spores by a plasma torch is studied. Bacterial-spore (Bacillus cereus) suspension is inoculated onto glass/paper slide-coupons and desiccated into dry samples, and inoculated into well-microplate as wet sample. The exposure distance of all samples is 4 cm from the nozzle of the torch. In the experiment, paper slide-coupon is inserted inside an env...

An arc-seed microwave plasma torch, which is operated at a 60 Hz periodic mode (with about 40 % duty cycle), runs stably at low airflow rate, and produces an abundance of reactive atomic oxygen in its plasma effluent, is applied to study the effects of atomic oxygen on bacterial spores. Bacillus cereus is chosen as the biological agent. Drops of bacterial-spore solution are inoculated onto glas...

a pure silicate host namely sr2mgsi2o7 as a support for a long-lasting afterglow when dopped with rare-earth elements was sought after. to this end the process of obtaining firing temperatures of the above mentioned phase in normal condition was carried out using suggested wet and dry methods. the degree of purity obtained in these preparatory methods as well as the different firing temperature...

We present a spectral analysis of a sample of red-sequence galaxies identified by van Dokkum (2005) as dry merger remnants and ongoing dry mergers. Kinematics, stellar population absorption features, and ionisation from emission lines, are derived. We find that approximately half of the sample showing strong tidal features have younger stellar populations than a control sample at a given veloci...