Here, we explore the ability of ZrO 2 NCs to form protective tribofilms under harsh conditions using a micro-pitting rig (MPR), consisting of a three ring-on-roller configuration. The experiments were conducted in polyalphaolephin (PAO) base oil, with and without 5nm diameter ZrO 2 NCs,...
Pitting the teamed VRM against a phase-doubled solution results in near identical thermal performance. Thermal performance Each VRM component serves a specific purpose. PWM controllers and phase-doublers control the circuit, and the power stages do the heavy lifting from an electrical and...
Micro-pitting is a fatigue effect that occurs in gears due to high contact stress and monitoring its progression is vital to prevent the eventual failure of the tooth flank. Parameter signature analysis has been successfully used to monitor the advanced phases of gear surface fatigue failures and ...
The aim of this paper is to develop image processing techniques to quantify two wear mechanisms: abrasion and micro-pitting. To characterize wear mechanisms, the required surface morphology was produced using wear testing of polymer in a twin-disc test rig. The micrographs of polymer contact ...
Design/methodology/approachConcerning micro-pitting and wear, tests, based mostly on the following standardized tests, are performed on a Forschungsstelle fuer zahnraeder und getriebebau (FZG)-back-to-back gear test rig: micro-pitting short test Graufleckenkurztest (GFKT) according to DGMK 575 (...
The durability and the pitting arising have been examined. The test rig consists of two electric motors with an electric power recirculating layout and is equipped with a temperature monitoring of the oil-jet type lubrication system. Vibrations phenomena are measured through triaxial accelerometer ...
Figure 1. FZG back-to-back test rig (schematic) based on DIN ISO 14635-1 [26]. The micro-pitting behavior of the investigated variants (see Table 3) was determined by load stage tests performed according to FVA 482/I [27]. In order to obtain comparative information on the micro-pitti...
Figure 1. FZG back-to-back test rig (schematic) based on DIN ISO 14635-1 [26]. The micro-pitting behavior of the investigated variants (see Table 3) was determined by load stage tests performed according to FVA 482/I [27]. In order to obtain comparative information on the micro-pitti...