Thermal wrinkling behavior of formable decorative film laminates

2016 ◽  
Vol 33 (3) ◽  
pp. 290-308 ◽  
Author(s):  
G Prasath Balamurugan ◽  
Rohan N Pukadyil ◽  
Mahdy M Malayery ◽  
Michael R Thompson ◽  
John Vlachopoulos ◽  
...  
Keyword(s):  
Heating Rate ◽  
Thermal Stresses ◽  
Metal Substrate ◽  
Rate Effect ◽  
Time Dependent ◽  
Threshold Temperature ◽  
Viscoelastic Response ◽  
Final Temperature ◽  
Rate Effects ◽  
Compliant Layer

This paper focuses on wrinkle development in decorative film laminates during heating operations with the goal to understand their driving factors and develop strategies to overcome such defects. The study looked at temperature and heating rate effects on the wrinkling behavior of a commercial black-out film laminated onto a metal substrate. The 135℃ threshold temperature identified for our film under which no wrinkles formed, related to the stiffness of its different construction layers. Heating rate was also noted by this study to be an important parameter in wrinkling; values between 1℃ and 350℃/min were tested. It was possible to exceed the threshold temperature stated above without wrinkling when the heating rate was sufficiently low (closer to 1℃/min, though less than 50℃/min was often sufficient depending on the final temperature). The heating rate effect is believed to be related to the time-dependent viscoelastic response of the compliant layer in relation to building thermal stresses.

Heating rate effects in time-dependent homogeneous nucleation in glasses

2017 ◽  
Vol 474 ◽  
pp. 1-8 ◽  
Author(s):  
J. Deubener ◽  
M. Montazerian ◽  
S. Krüger ◽  
O. Peitl ◽  
E.D. Zanotto
Keyword(s):  
Heating Rate ◽  
Homogeneous Nucleation ◽  
Time Dependent ◽  
Rate Effects

Heating rate effect on liquid Zn-assisted embrittlement of high Mn austenitic steel

2018 ◽  
Vol 347 ◽  
pp. 157-163 ◽  
Author(s):  
Doyub Kim ◽  
Jee-Hyun Kang ◽  
Sung-Joon Kim
Keyword(s):  
Austenitic Steel ◽  
Heating Rate ◽  
Rate Effect

Heating rate effects on the thermal and mechanical properties of ZrB 2

2021 ◽  
Author(s):  
Eric W. Neuman ◽  
Matthew J. Thompson ◽  
William G. Fahrenholtz ◽  
Gregory E. Hilmas
Keyword(s):  
Mechanical Properties ◽  
Heating Rate ◽  
Thermal And Mechanical Properties ◽  
Rate Effects

Time-dependent Viscoelastic Response of Acetabular Bone and Implant Seating during Dynamic Implantation of Press-fit Cups

2020 ◽  
Vol 81 ◽  
pp. 68-76
Author(s):  
Philipp Messer-Hannemann ◽  
Hannah Weyer ◽  
Graeme M Campbell ◽  
Michael M Morlock
Keyword(s):  
Time Dependent ◽  
Viscoelastic Response ◽  
Acetabular Bone ◽  
Press Fit

scholarly journals Effects of heating rate and heating up time to central biomass particles for bio-oil production

2016 ◽  
Vol 51 (1) ◽  
pp. 13-22
Author(s):  
MB Ahmed ◽  
ATMK Hasan ◽  
M Mohiuddin ◽  
M Asadullah ◽  
MS Rahman ◽  
...  
Keyword(s):  
Heating Rate ◽  
Particle Temperature ◽  
Product Distribution ◽  
Heating Rates ◽  
Final Temperature ◽  
Central Mass ◽  
Bio Oil ◽  
Reactor Temperature ◽  
Biomass Particles ◽  
Heating Up

Objective of this work was to pyrolysis woody biomass. Experiments were carried out at 300 to 500oC. Relatively bigger particles were used. Special emphasis was given to investigate the effects of heating rate and heating up time of the central mass of the particles on the product distribution. Surface temperature reached to the reactor set temperature immediately while the temperature at the central part was as low as 50oC. The center temperature gradually increased to the final temperature within 3 to 8 minutes, depending on the wood types and the reactor set temperature. For ipil-ipil wood the heating rate of the central mass was much faster than krishnachura and koroi woods, and thus the heating up time was lower. Ipil-ipil wood was experienced higher yield (65%) even at lower reactor temperature 300oC with particle temperature 450oC. In the case of krishnachura and koroi woods, the bio-oil yields were lower under the same condition due to the heating rates of the central parts were much slower. Further researchon different biomasses may be necessary to demonstrate overall process.Bangladesh J. Sci. Ind. Res. 51(1), 13-22, 2016

scholarly journals Heating rate effects on the crystallization behavior of isotactic polypropylene from mesophase – A de-polarized light transmission study

Polymer ◽  
2012 ◽  
Vol 53 (13) ◽  
pp. 2777-2782 ◽  
Author(s):  
Harutoshi Asakawa ◽  
Koji Nishida ◽  
Junpei Yamamoto ◽  
Rintaro Inoue ◽  
Toshiji Kanaya
Keyword(s):  
Heating Rate ◽  
Isotactic Polypropylene ◽  
Crystallization Behavior ◽  
Light Transmission ◽  
Polarized Light ◽  
Rate Effects ◽  
Transmission Study

Finite-Element Simulations and Probabilistic Fracture Assessments of the Response of Alternate Rifling Geometries

2007 ◽  
Author(s):  
A. E. Segall ◽  
R. Carter
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Thermal Stresses ◽  
Rotational Symmetry ◽  
Element Model ◽  
Time Dependent ◽  
Uniform Heating ◽  
Thermal Pressure ◽  
Single Firing ◽  
Hoop Stresses

A 3-D finite-element model was used to simulate the severe and localized thermal/pressure transients and the resulting stresses experienced by a rifled ceramic-barrel with a steel outer-liner; the focus of the simulations was on the influence of non-traditional rifling geometries on the thermoelastic- and pressure-stresses generated during a single firing event. In order to minimize computational requirements, a twisted segment of the barrel length based on rotational symmetry was used. Using this simplification, the model utilized uniform heating and pressure across the ID surface via a time-dependent convective coefficient and pressure generated by the propellant gasses. Results indicated that the unique rifling geometries had only a limited influence on the maximum circumferential (hoop) stresses and temperatures when compared with more traditional rifling configurations because of the compressive thermal stresses developed at the heated (and rifled) surface.

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