The Influence of Temperature on The Kinetics of Cut Growth in Vulcanizates

1959 ◽  
Vol 32 (3) ◽  
pp. 692-695 ◽  
Author(s):  
V. E. Gul ◽  
S. A. Vilnits
Keyword(s):  
High Speed ◽  
Glassy State ◽  
High Speed Photography ◽  
Influence Of Temperature ◽  
Brittle Solids ◽  
Significant Difference ◽  
Elastomeric Materials ◽  
Influence Of Temperature On ◽  
Published Research ◽  
Kinetics Of

Abstract Recently published research has conclusively demonstrated that rupture in vulcanizates represents a process which increases with time. Slow and fast stages of rupture were discerned. Through the use of high speed photography it was found that, in the usual testing of tensile strength, the rate of rupture growth is initially very small but then quickly although intermittently increases. This behavior occurred both in the rupture of specimens which were not cut and in testing specimens that had been previously cut. The effect of a cut has been thoroughly investigated. Studies conducted on the mechanism of rupture in elastomers indicate that the rupture of vulcanizates has much in common with that of brittle solids. Nevertheless there is a significant difference in the mechanism of rupture in elastomeric materials and brittle solids. It was natural, therefore, to expect a significant change in the kinetics of rupture growth in the region of the glass transition temperature. The aim of the present investigation was to follow the change in the kinetics of rupture of vulcanizates through the transition from the rubbery to the glassy state.

Kinetic Study of the Diels-Alder Reaction of Cyclopentadiene with Bis(2-Ethylhexyl) Maleate

2013 ◽  
Vol 634-638 ◽  
pp. 541-545 ◽  
Author(s):  
Jun Seong Park ◽  
Dae Hee Yun ◽  
Tae Won Ko ◽  
Yong Sung Park ◽  
Je Wan Woo
Keyword(s):  
Kinetic Study ◽  
Reaction Temperature ◽  
Atmospheric Pressure ◽  
Arrhenius Equation ◽  
Alder Reaction ◽  
Diels Alder ◽  
Influence Of Temperature ◽  
Diels Alder Reaction ◽  
Influence Of Temperature On ◽  
Kinetics Of

The kinetics of the Diels-Alder reaction of cyclopentadiene with bis(2-ethylhexyl) maleate has been studied at temperatures between 25 and 100 °C and at atmospheric pressure. The influence of temperature on the kinetic constants was determined by fitting the results to the Arrhenius equation. As a result, fitting line similar with the linear curve of the Arrhenius equation at 25, 30 and 40 °C. However, the fitting curve, at 60, 80 and 100 °C, tended towards the outside of the curve in the form of Arrhenius equation. The ratio of endo/exo was a slight change from increase of the reaction temperature.

The influence of temperature on the kinetics of apatite flotation from magnetite fines

1998 ◽  
Vol 54 (3-4) ◽  
pp. 131-145 ◽  
Author(s):  
Fenwei Su ◽  
K Hanumantha Rao ◽  
K.S.E Forssberg ◽  
P.O Samskog
Keyword(s):  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Kinetics Of

Kinetics of fracture of nodular cast iron by the method of high-speed photography

1977 ◽  
Vol 9 (12) ◽  
pp. 1462-1467
Author(s):  
I. S. Guz' ◽  
A. P. Lyubchenko ◽  
V. M. Matsevityi ◽  
S. L. Molodtsov ◽  
L. A. Smirnova
Keyword(s):  
Cast Iron ◽  
High Speed ◽  
Nodular Cast Iron ◽  
High Speed Photography ◽  
Kinetics Of

scholarly journals Influence of temperature on the dissolution kinetics of synthetic LaPO4-monazite in acidic media between 50 and 130 °C

2018 ◽  
Vol 509 ◽  
pp. 488-495 ◽  
Author(s):  
Yulia Arinicheva ◽  
Clemence Gausse ◽  
Stefan Neumeier ◽  
Felix Brandt ◽  
Konstantin Rozov ◽  
...  
Keyword(s):  
Dissolution Kinetics ◽  
Acidic Media ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Kinetics Of

scholarly journals Influence of temperature on the transmission performance of track circuit in high-speed railway

2019 ◽  
Vol 272 ◽  
pp. 01025
Author(s):  
Yixuan Yang ◽  
Zhichao Qiao ◽  
Huiyuan Yin ◽  
Jilong Li
Keyword(s):  
Simulation Model ◽  
Mathematical Simulation ◽  
High Speed ◽  
Transmission Performance ◽  
High Speed Railway ◽  
Influence Of Temperature ◽  
Influence Mechanism ◽  
Influence Of Temperature On ◽  
Track Circuit

In order to explore the influence of temperature on track circuit, a mathematical simulation model of track circuit is established. Then, the influence mechanism of temperature on the key equipment of track circuit is analysed. Finally, the influence on the receiver voltage and the locomotive signal current are computed based on the simulation model.

scholarly journals Kinematic Analysis of a Clamp-Type Picking Device for an Automatic Pepper Transplanter

Agriculture ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 627 ◽  
Author(s):  
Md Nafiul Islam ◽  
Md Zafar Iqbal ◽  
Mohammod Ali ◽  
Milon Chowdhury ◽  
Md Shaha Nur Kabir ◽  
...  
Keyword(s):  
Kinematic Analysis ◽  
High Speed ◽  
Model Simulation ◽  
Mechanical Damage ◽  
Maximum Velocity ◽  
Operating Conditions ◽  
High Speed Photography ◽  
Virtual Model ◽  
Significant Difference ◽  
Simulation And Validation

Pepper is one of the most vital agricultural products with high economic value, and pepper production needs to satisfy the growing worldwide population by introducing automatic seedling transplantation techniques. Optimal design and dimensioning of picking device components for an automatic pepper transplanter are crucial for efficient and effective seedling transplantation. Therefore, kinematic analysis, virtual model simulation, and validation testing of a prototype were conducted to propose a best-suited dimension for a clamp-type picking device. The proposed picking device mainly consisted of a manipulator with five grippers and a picking stand. To analyze the influence of design variables through kinematic analysis, 250- to 500-mm length combinations were considered to meet the trajectory requirements and suit the picking workspace. Virtual model simulation and high-speed photography tests were conducted to obtain the kinematic characteristics of the picking device. According to the kinematic analysis, a 350-mm picking stand and a 380-mm manipulator were selected within the range of the considered combinations. The maximum velocity and acceleration of the grippers were recorded as 1.1, 2.2 m/s and 1.3, 23.7 m/s2, along the x- and y-axes, respectively, for 30 to 90 rpm operating conditions. A suitable picking device dimension was identified and validated based on the suitability of the picking device working trajectory, velocity, and acceleration of the grippers, and no significant difference (p ≤ 0.05) occurred between the simulation and validation tests. This study indicated that the picking device under development would increase the pepper seedling picking accuracy and motion safety by reducing the operational time, gripper velocity, acceleration, and mechanical damage.

Sign in / Sign up

Export Citation Format

Share Document