isotropic superfinishing
Materials Matter: Comparing Surface Roughness Parameters
Effective gear design must account for a range of potential failure modes. As discussed in previous Materials Matter columns, gear failure modes can be fatigue-based and progressive (such as micropitting) or sudden (such as scuffing)....
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Materials Matter: Lambda Ratio
The lambda ratio was originally developed to quantify the quality of lubricant operating regimes relative to bearing performance....
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Materials Matter: Micropitting
Micropitting is a gear failure mode that typically occurs when higher contact stresses are applied to hardened gear teeth. Unlike most other failure modes, micropitting does not always proceed to component failure if left unaddressed....
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Materials Matter: Scuffing
Gear meshing is one of the most complex areas of study in tribology. Meshing consists of both sliding and rolling motion and can be affected by a number of other operating parameters....
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Materials Matter: Wind Turbine Gear Repair
Wind turbine gearbox durability has improved significantly over the past ten years. The days of early gearbox failure due to epidemic micropitting are largely in the past....
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Materials Matter: Power Density and Isotropic Superfinishing
Power density, also described as load-carrying capacity, is simply the amount of load that can be safely transferred by a gear or other power transfer component without failure....
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Materials Matter: Isotropic Superfinishing
Increasingly stringent operational requirements from customers coupled with enhanced global technical standards have heightened the focus of gear designers on a wide array of parameters that historically would have been of secondary consideration; on...
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Superfinishing Rear Axle Gears – A Significant Step Toward Reducing Automotive Greenhouse Gas Emissions
New regulations make it imperative that the European and US automotive industries meet strict, lower greenhouse gas emission standards....
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Comparative Corrosion Characteristics of Ground and Superfinished Gear Steels
The described effort was undertaken to assess the impact of the isotropic superfinishing (ISF®) process on the corrosion resistance of a variety of gear steels....
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Evaluation of Isotropic Superfinishing on a Bell Helicopter Model 427 Main Rotor Gearbox
The surface finish of a gear tooth is a critical factor in the wear, durability, noise generation, and efficiency of modern helicopter transmissions....
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Isotropic Superfinishing of S-76C+ Main Transmission Gears
Isotropic Superfinishing is a chemically accelerated vibratory finishing process that is capable of generating surface finishes with an Arithmetic Mean Roughness (Ra)< 3 min....
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Evaluation of the Scuffing Resistance of Isotropic Superfinished Precision Gears
The high performance required from aerospace gears places stringent requirements upon the metallurgical quality, geometry, and surface finish of mating parts....
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