scholarly journals Nano-Rheological Behaviour of Cassava Starch-Zinc Nanocomposite Film under Dynamic Loading for High Speed Transportation of Packaged Food

10.5772/64984 ◽  
2016 ◽  
Author(s):  
Adeshina Fadeyibi ◽  
Zinash D. Osunde ◽  
Gbabo Agidi ◽  
Evans C. Egwim ◽  
Peter A. Idah
Keyword(s):  
Dynamic Loading ◽  
Nanocomposite Film ◽  
High Speed ◽  
Rheological Behaviour ◽  
Cassava Starch ◽  
Packaged Food

A silver/graphene oxide nanocomposite film as a flexible SERS substrate for reliable quantitative analysis using high-speed spiral scanning spectrometry

2017 ◽  
Vol 53 (73) ◽  
pp. 10108-10111 ◽  
Author(s):  
Yejung Choi ◽  
Si Won Song ◽  
Wytse Hooch Antink ◽  
Hyung Min Kim ◽  
Yuanzhe Piao
Keyword(s):  
Graphene Oxide ◽  
Quantitative Analysis ◽  
Nanocomposite Film ◽  
High Speed ◽  
Scanning System ◽  
Adhesive Tape ◽  
Sers Substrate ◽  
Spiral Scanning ◽  
System P

Excellent uniformity (∼1.5% RSD) in SERS signals was obtained from an Ag/GO decorated adhesive tape on a simple in-house cylindrical scanning system.

Effect of Rate Sensitivity on Necking Behavior of a Laminated Tube Under Dynamic Loading

2013 ◽  
Vol 81 (5) ◽  
Author(s):  
Y. Shi ◽  
P. D. Wu ◽  
D. J. Lloyd ◽  
D. Y. Li
Keyword(s):  
Dynamic Loading ◽  
High Speed ◽  
Volume Fraction ◽  
Numerical Study ◽  
Rate Sensitivity ◽  
Element Model ◽  
Localized Necking ◽  
Rate Dependent ◽  
Positive Rate ◽  
Laminated Materials

An elastic-viscoplastic based finite element model has been developed to study the necking behavior of tube expansion for rate independent materials, rate dependent monolithic materials, and laminated materials during dynamic loading. A numerical study shows that for rate independent materials, the dynamic loading will not delay diffused necking but localized necking; for rate dependent materials, high strain rate sensitivity can significantly delay the onset of localized necking for both monolithic and laminated sheets and affect the multiple-neck formation in high-speed dynamic loading. The model also shows that a higher volume fraction of a clad layer with positive rate sensitivity material in a laminated sheet improves the sheet ductility.

Development of Dynamic Loading Device for Rotating Spindle of Machine Tools

2012 ◽  
Vol 523-524 ◽  
pp. 544-549
Author(s):  
Ryota Sawamura ◽  
Shinya Ikenaga ◽  
Atsushi Matsubara
Keyword(s):  
Dynamic Loading ◽  
Machine Tools ◽  
High Speed ◽  
High Performance ◽  
Loading Rate ◽  
Electric Response ◽  
Loading Test ◽  
Loading Device ◽  
Magnetic Loading ◽  
The Magnetic Field

High performance milling spindles, which have high rigidity and high speed, are required for high productive machining. In order to evaluate the rigidity change of the spindle, authors has been developed a magnetic loading device. This device provides attractive force in radial direction to a dummy tool attached to a spindle. By using this device, the static stiffness of the rotating spindle has been successfully evaluated. However the loading rate could not be controlled due to the electric response lag caused by the magnetic field. To solve this problem, electric response of the coil-tool system with the air gap is analyzed and the dynamic response is estimated. The air-gap's influence on the load was also evaluated. Based on the analysis, a dynamic loading test is designed carried out for the measurement of the rigidity of a machine tool spindle.

Dynamic Loading in High-Speed Ball Bearings

2018 ◽  
Vol 38 (2) ◽  
pp. 65-71
Author(s):  
Ya. M. Klebanov ◽  
V. V. Murashkin ◽  
K. A. Polyakov ◽  
A. I. Danil’chenko
Keyword(s):  
Dynamic Loading ◽  
High Speed ◽  
Ball Bearings

Research on the Dynamic Loading Method of High Speed Spindle

2011 ◽  
Vol 103 ◽  
pp. 475-479
Author(s):  
Jie Meng
Keyword(s):  
Dynamic Characteristic ◽  
Dynamic Loading ◽  
High Speed ◽  
Characteristic Curve ◽  
Loading Method ◽  
Input And Output ◽  
Loading System ◽  
Loading Modes

This paper presents a method of dynamic loading on high speed spindle used dynamometer. Based on the range of speed and power, considering the performance of different high speed spindle, two loading modes are put forward. The loading system can measure input and output parameters and draw characteristic curve of high speed spindle at one time. These methods can be used to study the dynamic characteristic of the high speed spindle, whose states at different working points are obvious.

Features of the Polymethyl Methacrylate Destruction Process by Various Types of Dynamic Loading

2021 ◽  
Vol 899 ◽  
pp. 473-478
Author(s):  
B.I. Kunizhev ◽  
A.M. Kugotova ◽  
Z.S. Torshhoeva ◽  
Ruslan A. Shetov
Keyword(s):  
Comparative Analysis ◽  
Laser Radiation ◽  
Polymethyl Methacrylate ◽  
Dynamic Loading ◽  
High Speed ◽  
Laser Action ◽  
Initial Energy ◽  
Destruction Process ◽  
Energy Characteristics ◽  
Similarities And Differences

The paper presents a comparative analysis of the dynamic loading of a polymethyl methacrylate (PMMA) target by a polyethylene (PE) projectile exposed to laser radiation with similar initial energy characteristics of the projectile and the laser pulse. The similarities and differences in the mechanisms of the target's response and its destruction to high-speed mechanical and laser action are shown. A higher efficiency of laser irradiation in the destruction of PMMA was found, and the conditions for the transition of the fracture mechanism from brittle to elastic-plastic were shown.

Dynamic Impact Characterization of Al+Fe2O3+30% Epoxy Composites Using Time Synchronized High-Speed Camera and VISAR Measurements

2005 ◽  
Vol 896 ◽  
Author(s):  
Louis Ferranti ◽  
Naresh N. Thadhani
Keyword(s):  
Dynamic Loading ◽  
High Speed ◽  
Elastic Recovery ◽  
Axial Strain ◽  
Epoxy Composites ◽  
Surface Velocity ◽  
High Speed Camera ◽  
Wave Interactions ◽  
Impact Experiments

AbstractReverse Taylor anvil-on-rod impact experiments were conducted on Al+Fe2O3+30% epoxy composites to measure their viscoelastic and fracture response to dynamic loading. Impact velocities ranged from 80 to 200 m/s. High-speed camera images capturing transient deformation reveal these materials exhibit significant elastic recovery in both the longitudinal and radial directions. Images were time synchronized with free surface velocity measurements, using VISAR, to track elastic/plastic wave interactions attributed to the material’s dynamic loading response. Some specimens underwent brittle fracture once a critical areal strain was exceeded while the axial strain response appeared unaltered.

A dynamic loading system for high-speed motorized spindle with magnetorheological fluid

2018 ◽  
Vol 29 (13) ◽  
pp. 2754-2765 ◽  
Author(s):  
Shengli Tian ◽  
Xiaoan Chen ◽  
Ye He ◽  
Tianchi Chen ◽  
Peiming Li
Keyword(s):  
Dynamic Loading ◽  
High Speed ◽  
Dynamic Performance ◽  
Temperature Stability ◽  
Magnetorheological Fluid ◽  
Experimental Results ◽  
Motorized Spindle ◽  
Loading Test ◽  
Linear Relationships ◽  
Loading System

A high-speed dynamic loading test is a key step when testing the dynamic performance and running quality of a high-speed motorized spindle. A loading test is very difficult to perform at high speeds. Based on the rheological behavior of the magnetorheological fluid, a novel high-speed dynamic loading system for a high-speed motorized spindle was designed, fabricated, and tested. The working principles and structure of this loading system are described. The torque model of the loader was derived based on the Herschel–Bulkley model and electromagnetic simulation using the finite element method. In addition, the torque–current relationship under different speeds was analyzed by experiments, and we found non-linear relationships between the viscosity and shear stress of the magnetorheological fluid with the shear rate. The Herschel–Bulkley model was corrected by fitting for the experimental results. The loading torque, calculated by the modified model, complied with the experimental results. This lays the foundation for the design of a high-speed transmission device based on the magnetorheological shear principle. Experiments of torque stability, temperature stability, and reusability verified the feasibility and accuracy of the proposed loading system. It provides a novel method to test the dynamic loading performance of high-speed motorized spindles.

Construction of Hammer for Sugarcane Shredder

2013 ◽  
Vol 811 ◽  
pp. 308-313 ◽  
Author(s):  
Pavel Podany ◽  
Jan Džugan ◽  
Josef Vacik
Keyword(s):  
Wear Resistance ◽  
Chemical Analysis ◽  
Dynamic Loading ◽  
High Speed ◽  
Impact Testing ◽  
Sugar Production ◽  
Weld Deposit ◽  
High Speed Impact ◽  
Microstructure Evaluation ◽  
Pin On Disc

Article deals with construction of hammer for cane shredder. Function of hammer in shredder consists in crushing sugarcane stalks for further processing in sugar production. Hammer loading and other calculations were made. Four weld deposit materials were suggested for protection of hammer against wear and dynamic loading. All samples with weld deposit were subjected to microstructure evaluation, chemical analysis, high speed impact testing and tribological PIN-on-DISC test for estimation of wear resistance. One weld deposit material was recommended as a result of these tests.

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