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发布日期: 2019-07-18   浏览次数: 98 次

Houston, We Have A Problem

赌博评级娱乐,澳门手机网上赌博,赌场赌盘现金网 www.cnhst.net Consider this; you’re a design engineer who needs a lubricant that performs well at extremely high temperatures. Your supplier informs you that the lubricant has excellent high temperature performance, however, the lubricant begins to burn when your aircraft enters orbit. A lubricant creates a barrier that helps to separate components. When a lubricant burns out, it can cause components to wear and eventually fail, sacrificing the entire design. This is just one of many plausible situations that can occur if a lubricant is not tested before it enters orbit.

We consider spacecrafts to be “devices that can’t fail” because they perform critical, costly missions that are hard (or impossible) to service. Because these devices can’t fail, design engineers need to ensure that all their components, including lubricants, meet performance standards. The best way to do that? Test before you launch.

Actual application testing is often unfeasible as planning and executing simulated application tests in-house are time consuming, costly and require experienced personnel and labs that may not be readily available. At Nye we have a variety of test rigs that to ensure that our lubricants meet a customer’s wear, durability, relative life, vibration, and cleanliness requirements:

Friction & Wear

SRV Tribometer

This test rig can run custom tests with options that include: rotational and linear oscillatory motion, loads of up to 2,000N load at 2,000RPM, and a maximum temperature of 180°C. Specimens include ball on disc, pin on disc, cylinder on disc, and custom geometries.

Mini Traction Machine

This machine (shown above) measures friction in a mixture of rolling/sliding contacts to simulate applications, like rolling element bearings and gears. It is also a good testing method for scuffing and galling of metal surfaces by allowing for the ball and disc to be driven in different directions. This produces a tribological test that can operate with high sliding/rolling speeds and low entrainment speed.

Endurance & Durability

ROF & Bearing Tester

This test allows us to estimate grease life, temperature limits, and speed factor for our products that are to be used in bearing applications. Such conditions include test lubricating greases at speeds up to 25,000RPM (900,000dmN), temperatures up to 230°C, radial loads of 50-900N, and axial loads of 100-1,100N.

Vacuum Bearing Test Rig

The Vacuum Bearing Test rig will offer engineers data that can be used to determine the realistic life expectancy of our lubricants test on angular contact bearings in high vacuum environments. This rig can support customer supplied bearings to simulate how a lubricant will perform in a specific application. Our high vacuum test can assess how our lubricants will perform at temperatures up to 200°C and determine mass loss under specific operating conditions. The rig also uses electrical resistance across the bearing to determine which lubrication regime our product falls into given the test parameters. 

Relative Life

Spiral Orbit Tribometer

This method of tribometry was developed at the NASA-Glenn Research Center. The SOT produces relative lifetime calculations based on the number of orbits made below a friction level. This high vacuum testing is a simulation of a thrust bearing and provides results that indicate the lubricant consumption, degradation, and life.

Vibration

Fretting Test Rig

Fretting wear is the result of micromotion caused by vibration or thermal cycles. Nye’s modular fretting test rig can test a variety of components and geometries to ensure that the lubricant will outlast your mission life requirements.

Cleanliness

Dynamic Particle Generator

The Dynamic Particle Generator classifies lubricant particle generation into ISO and Federal cleanliness levels for Aerospace, Cleanroom, and Semiconductor applications. It utilizes an ISO 3 clean air system, precision ball screw, and particle counter to characterize the number of particles down to 0.1 micron produced by various greases as the test is run.

 

 

ASTM E595 Vacuum Stability

This test (shown above) is designed to screen materials for volatile contamination. We can modify the test to run at longer periods of time, different temperatures, and to monitor the outgassing via Residual Gas Analysis. This test gives you a better understanding of the stability of your materials in a static vacuum environment including what is coming off your material.

To learn more about our standard and custom testing capabilities for the Aerospace Industry, download our Test Before You Launch brochure.

William Galary – Senior Technical Products Engineer

William Galary has been with Nye for 45 years serving in a multitude of roles including Ultrafiltration Manager, Lab Manager, Senior Technologist, and now Senior Technical Products Engineer. In his current position, William provides technical solutions that address the challenges our customers may have in choosing the right lubricant for their application. William specializes in the filtration of lubricants and attended the University of Massachusetts Amherst.