scholarly journals РАЗРАБОТКА И ИССЛЕДОВАНИЕ МЕТОДОВ НЕЙТРАЛИЗАЦИИ СОРБЕНТА, ЗАГРЯЗНЕННОГО ПАРАМИ КОМПОНЕНТОВ РАКЕТНОГО ТОПЛИВА

2018 ◽  
Vol 26 (4) ◽  
pp. 54-58
Author(s):  
С. А. Кудринский ◽  
Г. Л. Поздеев ◽  
Л. В. Муравлева ◽  
Т. В. Гуназа
Keyword(s):  
Solid Waste ◽  
Bench Test ◽  
Test Results ◽  
Dinitrogen Tetraoxide

The paper discusses the issues for neutralization of solid waste – sorbent saturated with vapors of highboiling propellants (dinitrogen tetraoxide – oxidizer, nonsymmetrical dymethylhydrazine – fuel). The original methods of neutralizing the sorbent, contaminated with vapors of propellants, have been developed and the known methods have been experimentally checked. The neutralization methods bench test results have been presented.

Simulation Analysis of the Working Process of the Corn Seed Metering Device with Combination Inner-Cell

2012 ◽  
Vol 215-216 ◽  
pp. 160-167 ◽  
Author(s):  
Qing Long Li ◽  
Ji Yang Yu ◽  
Qiang Qiang Zhang ◽  
Jian Qun Yu ◽  
Hong Fu
Keyword(s):  
Simulation Analysis ◽  
Three Dimensional ◽  
Bench Test ◽  
Particle Model ◽  
Test Results ◽  
Working Process ◽  
Corn Seed ◽  
3D Cad ◽  
Novel Method ◽  
Seed Metering Device

A three-dimensional discrete element method analytic model of the corn seed metering device with combination inner-cell was established based on its 3D CAD model, and the three-dimensional particle model of corn seeds was built by using the method of combination spherical particle. The working process of the corn seed metering device was simulated and analyzed by self-developed three-dimensional CAE software. It was observed that the simulative results of the seeding performance, clearing angles and dropping angles of the corn seeds well agreed with the bench test results. A novel method for studying and designing of the corn seed metering device was put forward.

Stiffness Performance Simulation and Testing of a New Type Integrated Suspension Strut

2012 ◽  
Vol 472-475 ◽  
pp. 2760-2765
Author(s):  
Hao Bin Jiang ◽  
Ying Jun Du ◽  
Shen Chen Ye
Keyword(s):  
Mathematical Model ◽  
Fluid Mechanics ◽  
Vertical Vibration ◽  
Bench Test ◽  
Test Results ◽  
Performance Simulation ◽  
Body Roll ◽  
New Type ◽  
Simulation Results ◽  
Stiffness Characteristics

The design scheme of a new type strut was put forward, whose stiffness characteristics can undertake linkage control. The structure and basic principle of this new suspension component were introduced. According to fluid mechanics and thermodynamics, a mathematical model for the stroke dependent stiffness characteristics of the strut was established, and the stiffness characteristics were analyzed by using software SIMULINK. Then the stiffness performance bench test of the strut specimen was carried out for verification. Results show that the test results agree well with the simulation results. It is verified that the established mathematical model is correct and the stiffness of this strut shows nonlinear changes vary with the displacement of piston. When the suspension is largely impacted, the stiffness of this strut increases quickly which could restrain the wheel bouncing, body roll and vertical vibration.

Design and Simulation Analysis of Vibration Energy Harvesting System Based on ADAMS

2019 ◽  
Author(s):  
Ziheng Zhu ◽  
Lin Xu ◽  
Mohamed A. A. Abdelkareem ◽  
Junyi Zou ◽  
Jia Mi
Keyword(s):  
Energy Harvesting ◽  
Vibration Energy ◽  
Bench Test ◽  
Test Results ◽  
Human Beings ◽  
Vibration Energy Harvesting ◽  
Wide Range ◽  
Harvesting Efficiency ◽  
Simulation Results ◽  
Energy Harvesting Efficiency

Abstract With the recent energy crisis, the new energy harvesting technologies have become one of the hot spots in engineering academic research and industrial applications. By its wide range of application fields, vibration energy harvesting technologies have been gradually developed and utilized in which an efficient and stable harvester technology is one of the recent key problems. In order to improve energy harvesting efficiency and reduce energy loss caused by motor inertial commutation, many mechanical structures or hydraulic structures that convert reciprocating vibration energy into single direction rotation of motor are proposed. Although these methods can improve energy harvesting efficiency, they can have negative effects in some cases, especially in the case of vibration energy harvesting from human beings. This paper proposes a vibration harvesting mechanism with mechanical rectification filter function applied to backpack. The prototype model of the system was established in SolidWorks and imported into ADAMS. Thereafter, dynamic analyses of mechanical rectification filtering characteristics and meshing characteristics of one-way clutch were simulated in ADAMS. Based on ADAMS, parametric design analysis and its influence on the mechanical rectification characteristics were investigated. The simulation results were validated by bench test results. Simulation results is done by ADAMS and the results match well with bench test results.

Instrumentation simultaneously measuring VCO2 and VO2 in humans using titration methods

1982 ◽  
Vol 52 (3) ◽  
pp. 786-791 ◽  
Author(s):  
C. M. Tsoi ◽  
D. B. Raemer ◽  
D. R. Westenskow
Keyword(s):  
Carbon Dioxide ◽  
Single Point ◽  
Open Circuit ◽  
Full Scale ◽  
Bench Test ◽  
Test Results ◽  
Short Term ◽  
Respiratory Flow ◽  
Analysis Technique ◽  
A New Technique

An instrument has been developed for the simultaneous measurement of carbon dioxide excretion (VCO2) and oxygen uptake (VO2). This instrument, the Nutrimeter, gives these breath-averaged measurements continuously without having to determine respiratory flow rate, perform timed spirometric gas collections, or determine absolute CO2 or O2 concentrations. It can be used on ventilated or nonventilated patients in long- and short-term studies. VO2 is determined via the replenishment technique. VCO2 is determined via a new technique, absorption-titration, described here. Bench test results of VCO2 measurements show a standard error of the estimate (SEE) +/- 0.591% of full scale (500 ml/min) and maximum single point error (MSPE) of +/- 3.54% over a 100--350 ml/min range. VO2 measurements show SEE +/- 0.518% of full scale (1,000 ml/min) and MSPE +/- 2.42% over a 100--450 ml/min range. In 31 human clinical trials the Nutrimeter was compared with the open-circuit spirometric collection and micro-Scholander analysis technique. VCO2 measurements show SEE +/- 2.208% and MSPE +/- 10.57% over 135--315 ml/min. VO2 measurements show SEE +/- 1.134% of full scale and MSPE +/- 9.54% over 170--360 ml/min. Response time is 60 s optimally for step changes in VO2 (0--90% of steady-state value), 90 s for VCO2.

scholarly journals Converting Simulated Sodium-bearing Waste into a Single Solid Waste Form by Evaporation: Laboratory- and Pilot-Scale Test Results on Recycling Evaporator Overheads

2004 ◽  
Author(s):  
D. Griffith ◽  
D. L. Griffith ◽  
R. J. Kirkham ◽  
L. G. Olson ◽  
S. J. Losinski
Keyword(s):  
Solid Waste ◽  
Pilot Scale ◽  
Waste Form ◽  
Test Results ◽  
Scale Test ◽  
Pilot Scale Test

scholarly journals Design and Optimization of Automatic Shifting Mechanism for the Tractor

2018 ◽  
Vol 153 ◽  
pp. 04004
Author(s):  
Shiheng Sun ◽  
Huiting Shi
Keyword(s):  
Bench Test ◽  
Test Results ◽  
Design And Optimization ◽  
The Stability

The stability of the shifting mechanism is the basis of the reliability of the automatic shift system. The gear shifting process of Taishan TG1804 tractor is hard and long. In order to solve this problem, we design a tractor automatic shift system and apply it to the tractor successfully. This paper designs a shifting mechanism, optimizes the shifting mechanism and dose the dynamic bench test. The test results prove that the optimized shifting mechanism is more reliable and more reasonable.

Master Cylinder Performance With And Without Vacuum

1996 ◽  
Vol 13 (2) ◽  
Author(s):  
Joel T. Hicks
Keyword(s):  
Performance Test ◽  
Bench Test ◽  
Test Results ◽  
Master Cylinder ◽  
The Road ◽  
Late Model

A Late Model Ford Bronco Left The Road In A Curve And Wound Up In Trees. Its Driver Insisted That The Brakes Shuddered, Which Caused Lost Of Control. The Truck Was Inspected In The Field By Insurance Representatives And A Mechanic. They Found Nothing That Would Cause The Brakes To Behave As Described, So The Master Cylinder And Vacuum Booster Were Removed For Possible Further Inspection. After The Vehicle Had Been Destroyed, The Client Wanted A Bench Test Of The Master Cylinder. Nothing Was Found In The Bench Test To Explain The Vehicle Behavior Described, But This Paper Will Provide Some Of The Performance Test Results For Your Benefit.

Performance Evaluation of Suspended Energy Harvesting Backpack Using Half-Wave Mechanical Rectification

2020 ◽  
Author(s):  
Jia Mi ◽  
Qiaofeng Li ◽  
Mingyi Liu ◽  
Xiaofan Li ◽  
Lei Zuo
Keyword(s):  
Energy Harvesting ◽  
Output Power ◽  
Average Power ◽  
Bench Test ◽  
Test Results ◽  
Human Beings ◽  
Frequency Range ◽  
Average Output ◽  
Full Wave ◽  
Half Wave

Abstract Human beings are becoming more and more dependent on electronic devices, such as smart phones, smart watches, GPS, etc. This paper presents the design, modeling and testing of a novel suspended energy harvesting backpack using half-wave mechanical rectification. The proposed half-wave rectification mechanism can convert bidirectional linear vibration into unidirectional rotation with nonlinear inertia. Compared with full-wave mechanical rectification, the proposed half-wave rectification is designed only to convert the motion in one of the vibration directions while remaining idle in the other direction. Numerical simulation shows the proposed half-wave rectification based suspended energy harvesting backpack can obtain about two times of the average output power as the previous full-wave rectification design while also maintaining larger output power in the wideband frequency range. Bench test results indicate that the proposed half-wave rectification-based energy harvesting backpack can harvest 6.7 W (peak)/2.1 W (average) under 2 Hz and 6 mm excitation with a 31.8 kg payload, which is a significant improvement compared with 1.9 W(peak)/0.9 W (average) for the counterpart of full-wave rectification system. In addition, bench test results also validate the energy harvesting in wideband frequency range. Treadmill tests demonstrate an average power range of 1.2–11.0 W under walking speeds of 3.2–6.4 km/h with a 13.6 kg payload.

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