in this article, failure and fracture mechanisms in an aluminum alloy (which has been used in diesel internal combustion engines), with and without ceramic thermal barrier coatings, have been investigated under isothermal and non-isothermal fatigue loadings. in this research, the base material is an aluminum-silicon-magnesium alloy and the thermal barrier coating includes a metallic bond coat l...

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...

For application in UV-material processing and UV-thin-film optics, the thermal contribution to damage and ablation phenomena will be investigated utilizing time resolved photothermal probe beam deflection (MIRAGE) technique. The potentiality of this method for the determination of both the sub-damage range and the Onset of damage, as well as the ablation threshold by using the thermal branch of...

Recent studies have shown that shockwave heating and millisecond boiling in high-intensity focused ultrasound fields can result in mechanical fractionation or emulsification of tissue, termed boiling histotripsy. Visual observations of the change in color and contents indicated that the degree of thermal damage in the emulsified lesions can be controlled by varying the parameters of the exposur...

Objective: Is subtotal abdominal hysterectomy with thermal damage of endocervical canal better than total abdominal hysterectomy for benign lesions? Design: Cross sectional study. Setting: Zagazig University Hospital, Obstetrics and Gynecology Department From September 2011 – September 2012. Population: 100 patients with benign gynaecological lesions designed to have abdominal hysterectomy. Pat...

Components used for thermal protection have not previously been interrogated with the impedance method. In this study, structures are fabricated to represent typical thermal protections systems. The replicas are designed to simulate actual protection systems in use. Observations are made into the verification of the impedance method in effectively monitoring complex thermal protection systems f...

BACKGROUND AND OBJECTIVE Focused ultrasound can produce thermal and/or mechanical effects deep within tissue. We investigated the capability of intense focused ultrasound to induce precise and predictable subepidermal thermal damage in human skin. MATERIALS AND METHODS Postmortem human skin samples were exposed to a range of focused ultrasound pulses, using a prototype device (Ulthera Inc.) e...

BACKGROUND AND OBJECTIVE The efficacy of laser treatment of port wine stains (PWS) has been shown to be highly dependent on patient-specific vasculature. The effect of tissue structure on optical and thermal mechanisms was investigated for different pulse durations by using a novel theoretical model that incorporates tissue morphology reconstructed tomographically from a PWS biopsy. STUDY DES...