نتایج جستجو برای: strain measurements
تعداد نتایج: 578477 فیلتر نتایج به سال:
The use of strain gages for low temperature thermal expansion measurements is increasing, due to it's convenience, and relative accuracy. The determination of thermal expansion with strain gages is complicated by "thermal output strain", a phenomena caused by the temperature dependence of the gage. If thermal output strain is properly compensated , strain gages may be used to measure thermal ex...
Silicon dioxide thin film is a common component in electronic devices and in MEMS, but its mechanical properties have rarely been studied. Techniques have been adapted and developed to conduct tensile tests on 1.0 μm thick silicon dioxide specimens that are 100, 150, and 200 μm wide and either 1 or 2 mm long. One end of the specimen remains fastened to the substrate, and the other is glued to a...
Methods 12 healthy volunteers (6 males, mean age 33±7 years) underwent CMR studies on a 1.5T system (Intera CV, Philips Healthcare, The Netherlands). Tagged CMR images were acquired at the apex, mid-ventricle and base with a CSPAMM pulse sequence (field of view: 300mm, matrix 128 x 128, slice thickness 10mm, tag separation 8mm, 18 phases, typical TR/TE 30ms/6ms, flip angle 25 degrees). In 6 vol...
High-resolution images can be analysed by geometric phase analysis (GPA) [3] or applying peak-finding routines to determine the positions of individual atomic columns. GPA is best adapted to measuring the deformation of the crystalline lattice, as the example concerning a five-fold twinned Pt nanoparticle will show (Figure 1). These star-shaped particles [4] have a disclination-like strain fiel...
Background Because conventional echocardiographic parameters have several limitations, strain echocardiography has often been introduced in clinical practice. However, there are also obstacles in using it in clinical practice. Therefore, we wanted to find the current status of awareness on using strain echocardiography in Korea. Methods We conducted a nationwide survey to evaluate current use...
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