Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : frequency


Experimental Study of Vibration on Pipe Conveying Fluid at Different End Conditions for Different Fluid Temperatures

Kayser A. Ameen; Mustafa J. Al-Dulaimi; Ali A. Hatem

Engineering and Technology Journal, 2019, Volume 37, Issue 12A, Pages 512-515
DOI: 10.30684/etj.37.12A.3

Dynamic behavior of a copper pipe conveying fluid at different fluid temperatures is investigated experimentally. Three types of supports are used, which are simply support - simply support, fixed – fixed support and fixed – free support. The effect of the support's types on the frequency and the amplitude of vibration for the pipe conveying the fluid are studied for various flow temperature. These vibration characteristics were tested at temperatures 50, 65 and 80 ºC

Thermal Radiation Detector (TRD) Modeling

Mehdi Munshid Shellal

Engineering and Technology Journal, 2011, Volume 29, Issue 2, Pages 322-335

This paper describes the theoretical principles of TRD operation based on
thermal absorption of incident power of radiation. In the modelling procedures,
the main parameters influencing on the detector features have been introduced. So
the this model allow us to predict the behaviour of different types of thermal
detectors. It is found that the temperature response of the detector against the
frequency of incident radiation in logarithmic scale describes the TRD as a typical
low pass filter characteristics. The cut off corner frequency is found to be at 1 Hz
under which the temperature change attains a saturation value. In the sense that the
thermal detector will detect all the incoming radiations of higher frequency.