Resources Center
Articles
Advancing rocket propulsion through Additive Manufacturing, novel surface finishing technologies and public-private partnerships
Whilst Additive Manufacturing is undoubtedly having a huge impact on the design and manufacture of rocket propulsion systems, most notably combustion chambers and nozzles, the Achilles’ heel of all AM process is currently as-built surface finish.
Technical Papers
Gear Repair for Helicopters and Wind Turbines via Isotropic Superfinishing
The wind turbine, aerospace, and helicopter gear industries recognize the importance of surface finish and surface texture for maximizing component and system performance.
Videos
Metal Finishing for 3D Printed Parts Webinar – Part 1
Metal Finishing for 3D Printed Parts While many can be put into operation as sintered, there are a number of […]
White Papers
Changes Ahead in the Roughness Standards
I have written numerous articles on tooth flank surface roughness measurement. This is such a page-turner of a subject!
Videos
Metal Finishing for 3D Printed Parts Webinar – Part 6 – SHOCK ABSORBER PISTON
Metal Finishing for 3D Printed Parts While many can be put into operation as sintered, there are a number of […]
White Papers
Materials Matter : Roughness Measurement: Optical vs. Contact Stylus Profilometry
Optical profilometry will become an important tool for predicting gear performance with more research and development of an objective lens to fit into tooth spaces.
Technical Papers
Report of the Condition of a General Electric Transportation Systems Gearbox
Wind power plant operation and maintenance (O&M) costs remain an appreciable contributor to the overall cost of wind energy, with a capacity-weighted average of $11/megawatt-hour (MWh) for projects installed since 2000 and $9/MWh for projects installed since 2010
White Papers
Rotorcraft Gearbox Regulations: LOL (not what you think)
The European Union’s CS-29 Amendment 7 places more stringent and rigorous testing requirements for certification of Category A type pressurized gearboxes under loss of lubrication conditions compared to the previous regulation.
White Papers
Materials Matter : Roughness Measurement Tips: Calibration, the Razor Blade Test
If a problem is found with a contact stylus profilometer during routine check with a Rubert-Song specimen, do a little troubleshooting before sending it off for calibration and recertification.
White Papers
Roughness Measurement Tips: The Scratch Pad
From the perspective of the shop floor environment, the previous Materials Matter column “Roughness Measurement Tips: 2 V 5” discussed the contact stylus 2-micron radius tip versus a 5-micron radius tip.
Technical Papers
A Comparison of Surface Roughness Measurement Methods for Gear Tooth Working Surfaces
Surface roughness is a critical parameter for gears operating under a variety of conditions. It directly influences friction and contact temperature, and therefore has an impact on various failure modes such as macropitting, micropitting and scuffing.
White Papers
Vibratory Media Compositions vs. Attrition and Density
The third in our multi-part series on vibratory processing of gears is focused on understanding how media of different compositions have varying attrition rates and densities, and why these are important in vibratory finishing of gears.
White Papers
Selecting media for optimum vibe bowl gear finishing
Choosing the best media depends on structure and shape of the tooth flank, and whether media components should be abrasive, non-abrasive, or a blend.
White Papers
Materials Matter: How to Set Up a Vibratory Bowl for Gear Finishing
The vibratory bowl is toroidal-shaped, consisting of a center hub surrounded by an OD wall. Direct drive machines have a motor and driveshaft set inside the center hub.
