Results 281 to 290 of about 11,849,580 (359)

Determination of mechanical properties of FFF 3D printed material by assessing void volume fraction, cooling rate and residual thermal stresses

Rapid prototyping journal, 2019
Purpose This paper aims to present experimental and numerical analyses of fused filament fabrication (FFF) printed parts and show how mechanical characteristics of printed ABS-MG94 (acrylonitrile butadiene styrene) are influenced by the void volume ...
Rafael Quelho de Macedo, R. T. L. Ferreira, Kuzhichalil Jayachandran   +2 more
semanticscholar   +1 more source

Plunge‐cooling of tissue blocks: determinants of cooling rates

Journal of Microscopy, 1985
SUMMARYTissue blocks have been plunged into a liquid coolant and the resultant ice‐crystal damage is discussed. Some blocks have been frozen without apparent ice‐crystal damage; they were not treated with cryo‐protectants but were mounted on streamlined foil supports which separated the specimen from the thermal mass of the support pin.
K P, Ryan, D H, Purse
openaire   +2 more sources

Edge Weld Cooling Rates

Transactions of the Canadian Society for Mechanical Engineering, 1983
Numerical modelling techniques are used to investigate the effect of heat source shape on the cooling rate (at 700 C) of edge welds. Cooling rates are determined for point, line, planar and volume heat sources. These, in turn, are compared to experimental values and to cooling rates calculated by the traditional Adams[1] relationship where the heal ...
A.S. Oddy, M.J. Bibby
openaire   +1 more source

COOLING RATES OF FOODS

Journal of Milk and Food Technology, 1973
Rapid cooling is essential to prevent multiplication of microorganisms in potentially hazardous foods. This requirement is frequently not met with viscous foods in large containers. The time required to cool an 8-gal container of white sauce from 105 to 57 F was 25 hr.
R. W. Dickerson, R. B. Read
openaire   +1 more source

Cooling rates in splat cooling

Materials Science and Engineering, 1967
Abstract Calculations and experimental observations made on cooling rates during splat quenching are presented. Three possible types of cooling behavior are discussed: ideal cooling, intermediate cooling and Newtonian cooling. The effects of splatting-process variables on the cooling rates are described, the most important of these variables being ...
openaire   +1 more source

Cool! Rates of Heating and Cooling

Journal of Chemical Education, 2007
In this Activity, students measure and graph the rate of warming for a chilled thermometer bulb held in room temperature air, for a chilled bulb held between two fingers, and for a few milliliters of chilled water. Students are familiar with the everyday phenomena of warming, but measurement affords the unexpected result that the process is not linear.
openaire   +1 more source

Cryocrystallography: effect of cooling medium on sample cooling rate

Journal of Applied Crystallography, 1998
The rates of cooling of small samples with cold N2gas (100 K), liquid N2(77 K) and liquid propane (100 K) have been measured. The samples were one bare Cu-constantan thermocouple and one coated with a 0.25 mm layer of silicone rubber cement. Gas cooling yielded the lowest rate, liquid N2the highest.
Linda J. Walker, Phillip O. Moreno, Håkon Hope   +2 more
openaire   +1 more source

Rate of runaway evaporative cooling

Physical Review A, 2011
Evaporative cooling is a process that is essential in creating Bose-Einstein condensates in dilute atomic gasses. This process has often been simulated based on a model using a truncated Boltzmann distribution. This model assumes that the energy distribution up to the threshold energy can still be described by a Boltzmann distribution: it assumes ...
J. van de Groep, P. van der Straten, J. M. Vogels   +2 more
openaire   +1 more source

Influences of Cooling Rate on Solidification Microstructure and Carbide of GCr15 Bearing Steel

Metallurgical and Materials Transactions B, 2023
Weiling Wang, Tengfei Luo, Zong-hui Liu, Sen Luo, Miao‐yong Zhu   +4 more
semanticscholar   +1 more source

Cooling rates of seven hexahedrites

Geochimica et Cosmochimica Acta, 1978
Abstract Cooling rates for seven hexahedrites, (Uwet, Coahuila, Walker County, Lombard, Quillagua, Hex River Mountains and Tocopilla) have been determined using a ternary diffusion controlled phase growth analysis developed by the authors. The model is applied to the exsolution and growth of plate phosphides in the kamacite phase of hexahedrites ...
E. Randich, J.I. Goldstein
openaire   +1 more source