MEMS (Micro-Electro-Mechanical-System) technology is providing inertial sensors to industry, with a low cost manufacturing technology and miniature dimensions capabilities (few millimeters). Nowadays MEMS sensors are widely used in low-accuracy level applications (typically in the automotive field), where cost and dimensions are priority advantages. Starting from these considerations chip produ...

Strain-controlled fully reversed fatigue testing, or strain-life provides critical information on material lifetime and damage response. Strain-life data in hydrogen gas environments is missing the literature could provide valuable insights into effects mechanical response of metals such as steel. We adapted existing hydrogen-gas-environment mechanical-testing equipment, which had been designed...

In this study, fatigue life of power semiconductor devices measured in cycles to failure during an accelerated stress test in a climate chamber is analyzed. The tested devices fail mainly in a short circuit event and their physical inspection reveals cracks in the power metallization. Commonly, the time till fracture of macroscopic metal layers is modeled with S-N or ε-N fields, this means that...

Most patients who require mechanical ventilation for longer than 24 hours, and who improve the condition leading to the indication of ventilatory support, can be weaned after passing a first spontaneous breathing test. The challenge is to improve the weaning of patients who fail that first test. We have methods that can be referred to as traditional, such as the T-tube, pressure support or sync...

Understanding and modelling liver biomechanics represents a significant challenge due to the complex nature of this organ. Unfortunately, there is no consensus on liver viscoelastic properties, and results are strongly dependent on sample type and status, adopted testing method, and testing conditions. Standard force-triggered tests (e.g. step response or dynamic mechanical tests) necessitate a...