Effect of stress on the equilibrium self-heating temperature of plastics in cyclic loading

1970 ◽  
Vol 3 (1) ◽  
pp. 123-125 ◽  
Author(s):  
S. B. Ratner ◽  
A. V. Stinskas
Keyword(s):  
Cyclic Loading ◽  
Heating Temperature ◽  
Self Heating

scholarly journals Stationary Self-Heating of the Circular and Annular Composite Plates Hinged on the Boundary under Axisymmetric Cyclic Loading

2011 ◽  
Vol 20 (5) ◽  
pp. 096369351102000 ◽  
Author(s):  
Andrzej Katunin
Keyword(s):  
Heat Transfer ◽  
Cyclic Loading ◽  
Transfer Equation ◽  
Heating Temperature ◽  
Composite Plates ◽  
The Self ◽  
Heat Transfer Equation ◽  
Dissipation Energy ◽  
Self Heating ◽  
Parametric Analyses

The present study is focused on the analytical modelling of the stationary self-heating caused by the hysteretic behaviour of the polymeric laminated circular and annular plates hinged on the boundary under axisymmetric transverse cyclic loading. The investigation was based on the complex parameters concept. The coupled thermoviscoelasticity problem was solved by substitution of the dissipation energy function to the heat transfer equation as a source function. The self-heating temperature distributions formulas were obtained by solving the heat transfer equation with appropriate thermal boundary conditions using trigonometric Fourier series. Numerous parametric analyses were presented. It was shown, that omitting the influence of the self-heating effect may results in the incorrect description of the behaviour of polymeric composites under cyclic loading.

scholarly journals Fatigue and Thermal Failure of Polymeric Composites Subjected to Cyclic Loading

2012 ◽  
Vol 21 (3) ◽  
pp. 096369351202100 ◽  
Author(s):  
Andrzej Katunin ◽  
Marek Fidali
Keyword(s):  
Cyclic Loading ◽  
Heating Temperature ◽  
Qualitative Evaluation ◽  
Polymeric Composites ◽  
The Self ◽  
Heating Effect ◽  
Thermal Failure ◽  
Self Heating ◽  
Measurement Results ◽  
Parametric Dependencies

In the presented study the experimental results for the investigation of fatigue of polymeric composites subjected to intensive cyclic loading with presence of the self-heating effect were presented. Experiments were carried out on laboratory stand, which provides the synchronous measurement of loading force, displacements and temperature. It was observed, that the fatigue process during occurrence of the self-heating effect consists of three phases, which were analyzed and described. The characteristic self-heating temperature distributions and their evolution during the whole loading history were analyzed. The parametric analysis of influence of loading conditions on the self-heating temperature evolution and fatigue of polymeric composites was presented. Basing upon the measurement results the authors proposed empirical models, which give a qualitative evaluation of parametric dependencies.

Self-heating of electrically conductive metal-cementitious composites

2019 ◽  
Vol 30 (15) ◽  
pp. 2234-2240 ◽  
Author(s):  
Salam R Armoosh ◽  
Meral Oltulu
Keyword(s):  
Large Scale ◽  
Heating Temperature ◽  
Low Cost ◽  
Cement Composite ◽  
Input Voltage ◽  
Cement Composites ◽  
Electrically Conductive ◽  
Self Heating ◽  
Metal Materials ◽  
Increasing Demand

Given the increasing demand for higher performance and economic gains in cement composite products, the self-heating performance of cement composites is becoming ever more assorted and progressive. This study investigates the effects of metal materials on self-heating of cement composites. Cementitious composite cubes containing up to 20% of metal materials were tested to improve their conductivity and hence investigate their performance in terms of electrical resistance heating. The metals that were studied were copper, iron, and brass shavings. The test variables were types of metals and input voltage. The tests showed that the presence of metal components improved cementitious cubes’ conductivity, and hence, they transferred heat. In addition, the tests showed that the heating temperature changed with the type of metal and input voltage. Analysis of energy consumption, heating rate and maximum surface temperatures was performed to evaluate the possibility of using metal materials as low-cost heating elements in large-scale heating systems.

Bias-dependent MOS transistor thermal resistance and non-uniform self-heating temperature

2009 ◽  
Vol 42 (7) ◽  
pp. 075101 ◽  
Author(s):  
Xi Wang ◽  
Younes Ezzahri ◽  
James Christofferson ◽  
Ali Shakouri
Keyword(s):  
Thermal Resistance ◽  
Heating Temperature ◽  
Mos Transistor ◽  
Self Heating

Softening and local self-heating of bituminous mixtures during cyclic loading

2017 ◽  
Vol 18 (sup2) ◽  
pp. 164-177 ◽  
Author(s):  
Lucas F. de A. L. Babadopulos ◽  
Cédric Sauzéat ◽  
Hervé Di Benedetto
Keyword(s):  
Cyclic Loading ◽  
Bituminous Mixtures ◽  
Self Heating

Modeling of the Heat Loss in a Thermal Sensor for Water Made of NTC Thick Film Segmented Thermistors

2013 ◽  
Vol 543 ◽  
pp. 334-337 ◽  
Author(s):  
Miloljub D. Lukovic ◽  
Maria Vesna Nikolic ◽  
Branka M. Radojcic ◽  
Obrad S. Aleksić
Keyword(s):  
Water Temperature ◽  
Thick Film ◽  
Heat Loss ◽  
Water Flow ◽  
Heat Balance ◽  
Heating Temperature ◽  
Balance Equations ◽  
Flow Meter ◽  
Exponential Factor ◽  
Self Heating

NTC thick film segmented thermistors were realized by screen printing of a low resistivity paste and conductive PdAg paste printed for electrodes. Two thick film thermistors as thermal sensors were placed in plastic tube housing connected to the water mains to form a calorimetric type of flow-meter, e.g. to measure the input water temperature and the thermistor self-heating temperature. Range constant voltage (RCV) was applied for self-heating thermistor power supply in different ranges of input water temperature. Modeling of the heat loss in the flow-meter for water was derived from heat balance equations for a self-heated thermistor in static water and in water flow conditions (static and dynamic thermistor temperature). Both temperatures (static and dynamic) were related to self-heating currents. The input water temperature was measured independently by a cold thermistor. Other parameters such as water thermal conductivity, thermistor exponential factor B and nominal thermistor resistance at room temperature were included in the thermistor heat balance equations. The logarithmic behavior of self-heating thermistors in the water flow enable modeling of heat loss as a function of static and dynamic currents related to static and dynamic thermistor temperatures. The model achieved was used in the fitting procedure of measured data of the flow-meter response.

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