نتایج جستجو برای: stress measurement
تعداد نتایج: 865160 فیلتر نتایج به سال:
Newly developed stress increment measurement technique is presented. Based on stress inversion theory proposed by authors, spontaneous stress increment field can be obtained even if the material is under plastic deformation. We present here an application example of this technique by means of the stress increment field measurement at the crack tip of an aluminum plate under the monotonic loadin...
Distributed stress sensor with a scanning Michelson white light interferometer can be used to detect stress distribution and its value by analyzing polarization mode coupling caused by stress field in PMFs (polarization maintaining fibers). In the measurement of polarization coupling, the birefringence in sensing fiber is usually considered to be wavelength-independent. The spatial resolution o...
Solid stress and tissue stiffness affect tumour growth, invasion, metastasis and treatment. Unlike stiffness, which can be precisely mapped in tumours, the measurement of solid stresses is challenging. Here, we show that two-dimensional spatial mappings of solid stress and the resulting elastic energy in excised or in situ tumours with arbitrary shapes and wide size ranges can be obtained via t...
objective: stress and other emotional distress are prevalent among cardiovascular patients. this study is performed to investigate the effect of medical counseling on stress and physiological factors of patients after coronary artery bypass graft surgery (cabg) and percutaneous transluminal coronary angioplasty (ptca). methods: this study is of experimental type with pre-test, post-test and c...
For modern VLSI/ULSI fabrication the use of multilevel interconnects is of crucial importance. For electromigration reliability characterizations, time-consuming stress measurements have to be carried out [1,2]. During these measurements a via-hole chain is stressed because of high temperature and high current densities, and the resistance is determined. This type of measurement usually takes m...
Estimation of the stress distribution in ferromagnetic components is very important for evaluating the working status of mechanical equipment and implementing preventive maintenance. Eddy current testing technology is a promising method in this field because of its advantages of safety, no need of coupling agent, etc. In order to reduce the cost of eddy current stress measurement system, and ob...
Stress-free and two-way thermoelastic shape memory, with 1.2% strain and 6 K temperature hysteresis, has been found in single crystalline Ni52Mn24Ga24 . The deformation can be enhanced more than three times, up to 4.0% shrinkage with a bias field 1.2 T applied along the measurement direction, or changed to 1.5% expansion by the 1.2 T applied perpendicular to the measurement direction. For achie...
The focal interest of this chapter on teacher stress is methodologic. The purpose is fourfold. First, the chapter enumerates a number of defects in existing measures of job stress in teachers and, concomitantly, other helping professionals. Second, alternative ways of measuring stress in teachers are suggested and evaluated. In the section on these alternatives, the use of depressive symptom sc...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید