نتایج جستجو برای: pulsed eddy current pec
تعداد نتایج: 825071 فیلتر نتایج به سال:
Abstract. Band selectivity to address specific resonances in a spectrum enables one encode individual settings for diffusion experiments. In single experiment, this could include different gradient strengths (enabling coverage of larger range constants), delays, or directions anisotropic measurement). report, selective variant the bipolar pulsed eddy current delay (BPP-LED) enabling encoding th...
Non-destructive eddy current testing (ECT) is widely used to examine structural defects in ferromagnetic pipe in the oil and gas industry. Implementation of giant magnetoresistance (GMR) sensors as magnetic field sensors to detect the changes of magnetic field continuity have increased the sensitivity of eddy current techniques in detecting the material defect profile. However, not many researc...
according to the english literature, various lasers and light sources (i,g. argon ion lasers, pulsed ktp lasers, diode lasers and nd:yag lasers, pulsed dye laser(pdl), intense pulsed light sources (ipls) are applicable for the treatment of different vascular lesions. these conditions are the most important indication for laser therapy. this review summarizes the current literature on ipl with r...
Precipitation hardening is the most common method in the strengthening of aluminium alloys. This method relies on the decrease of solid solubility with temperature reduction to produce fine precipitations which impede the movement of dislocations. The quality control of aluminium alloy specimens is an important concern of engineers. Among different methods, non-destructive techniques are the...
Power electronic circuit (PEC) design is a complicated optimization problem that calls for evolutionary computation (EC) algorithms. The existing EC algorithms for optimizing PEC have difficulty in practical applications because they demand users to carefully define very narrow search ranges for different circuit components. Aiming at this problem, this paper models PEC with uniform search rang...
The development of NMR spectroscopic techniques was pushed significantly forward with the development of broad-band, pulsed-RF spectrometers aided by the Fast Fourier Transform (FFT). To this day, the older techniques using continuous-wave RF spectrometers are seldom used. However, continuous wave techniques may still hold a distinct advantage over pulsed techniques in regimes where the time-in...
We consider the time-harmonic eddy current problem in its electric formulation where the conductor is a polyhedral domain. By proving the convergence in energy, we justify in what sense this problem is the limit of a family of Maxwell transmission problems: Rather than a low frequency limit, this limit has to be understood in the sense of BOSSAVIT [11]. We describe the singularities of the solu...
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