The system was designed using a graphical programming language-LABVIEW which can be put into use in speed characteristic experiments, load characteristic experiments and acquiring indicator diagram of work. Besides, it can control the speed and throttling of engine.
The paper introduced the methods and results of acceleration reliability test of abroad mining gear reducer, analysed the principles and technical ways to realize the acceleration reliability test of gear reducer with S N fatigue curve and Miner theory and proposed the method to determine the acceleration test charge and time of gear reducer.
In the range of experimental load (α≤41. 0 kg - COD/m3 · d',a≤15. 05 kg - phenol/ m3 · d). COD average removal efficiency can be achieved above 80% volatile phenol 90% which shows that BFB is operationally economy and stable.
The test load had great influence on chemical composition and structure of the tribo chemical reacting film, especially for the chemical states of carbon and boron elements. The formation of the types of O-CO and B N compounds were increased with the increase of load.
Damage accumulation laws are established to consider the residual strength of members that survived a proof load.
For a given reliability index (β), the improvement of performance can be quantified as characteristic strength adjustment factors for proof loading in terms of the ratio of the performance factors (φ) between the original and proof load material.
The adjustment factors depend on the proof load level, the β level, and the distribution selected for fitting the strength data after proof loading.
According to the existing standard specifications, the proof load test is mandatory for the acceptance/rejection of these components.
The initial crack sizes at the critical stress points for the fatigue crack growth analysis were established through proof load tests.
Potential of a test charge in a dust-electron plasma
The potential of a slowly moving test charge in a positive-dust-electron plasma is calculated taking into account dust grain charge fluctuations, as well as collisions between neutral atoms and electrons and dust grains.
Results are presented from numerical investigations of the potential of a test charge in a plasma-wall sheath.
Energy exchange between a test charge and an unstable electron beam
An investigation is made of the interaction between a test charge and an electron beam which is convectively unstable against plasma oscillations.