Transient thermography, which employs pulse surface heating of an inspected component followed by acquisition of the thermal decay stage, is gaining wider acceptance as a result of its remoteness and rapidness. Flaws in the component’s material may induce a thermal contrast in surface thermograms. An important issue in transient thermography is estimating the depth of a subsurface flaw from the...

ABSTRACT The transient heat transfer within a layered structure can be modeled efficiently using the thermal quadrupole methods. Such numerical simulations would contribute to effective experimental design for thermography inspection applications of composite materials. Current research is part such effort that focuses on parametric study both two-layer model and four-layer model. The variat...

Using a block of three separated solid elements, a thermal source and drain together with a gate made of an insulator-metal transition material exchanging near-field thermal radiation, we introduce a nanoscale analog of a field-effect transistor that is able to control the flow of heat exchanged by evanescent thermal photons between two bodies. By changing the gate temperature around its critic...

The Present paper aims significantly analyses the effect of transient hydro magnetic Coutte flow and heat transfer of an incompressible electrically conducting viscous fluid through a porous medium between two infinitely long horizontal parallel plates when upper plate is allowed to move in the presence of uniform transverse magnetic fluid normal to the plates whereas lower plate kept at rest t...

Overstress Tong Li Ching-Han Tsai Sung-Mo (Steve) Kang Dept. of Computer Science Dept. of Electrical and Computer Engineering Coordinated Science Laboratory Coordinated Science Laboratory Univ. of Illinois at Urbana-Champaign Univ. of Illinois at Urbana-Champaign Abstract Accurate simulation of transient device thermal behavior is essential to predict CMOS VLSI circuit failures under electrical...

The thermal emission from a Ni–P disk substrate heated by a pulsed excimer laser is measured with nanosecond time resolution. A fast InGaAs photodetector is employed to capture the thermal emission signal. The spectral surface reflectivity is simultaneously measured in situ. The transient surface temperature is derived from the spectral thermal emission signal on the basis of Planck’s blackbody...