Machine Health

Machine Health Kepakaran kami membantu engineer dan technician memahami kesihatan mesin menggunakan teknologi tinggi dengan pantas dan mampu menilai root cause sebenar

10/05/2017

A summary on proximity probe calibration and troubleshooting using the TMS 9110D. The video uses a voltmeter to measure the gap voltage and ensure your testi...

03/05/2017

Gary Wileczka presents an Introduction to Proximity Probes for Vibration Monitoring at Hawk Talks on the SunyIT campus

26/04/2017

http://www.mobiusinstitute.com In this webinar, Jason Tranter first discusses the most common reasons why rolling element bearings fail, including lubricatio...

19/04/2017

http://www.mobiusinstitute.com Way too many vibration analysts believe that spectrum analysis alone is enough to determine the nature and severity of a machi...

12/04/2017

http://www.mobiusinstitute.com/ Vibration analysis provides an extremely powerful opportunity to learn about the condition of rotating machinery – but only i...

05/04/2017

How do you detect the fault above?

Unbalance : 1x radial high
Dynamic : 0-180° phase difference across machine
: 90° ± 40° between vertical and horizontal

Static : in phase across machine
: 90° ± 30° between vertical and horizontal

Couple : out of phase across machine
: 90° ± 30° between vertical and horizontal

Overhung : high 1x axial, 1x radial high
: axial phase readings in phase

Vertical machines : 1x radial ( horizontal) high
: in phase ± 30° at different point on machine

Misalignment : 1x & 2x (3x and 4x…..) at axial & radial
Angular : high 1x (2x & 3x…..) axial
: 180° across coupling in axial direction

Parallel : high 2x radial ( 1x )
: 180° across coupling in radial direction

29/03/2017

What is the common vibration faults found in rotating equipment?

Unbalance and misalignment

22/03/2017

What is the difference between a rigid and flexible rotor?

Rigid rotor : machine that run below critical speed
Flexible rotor : above critical speed

08/03/2017

What is resonance and its effect on vibration?

Operating condition where an excitation frequency is near a natural frequency of the machine structure.

Resonance can amplify the small vibratory forces from machine operation, and severe vibration levels can result.

01/03/2017

Describe the difference between shaft vibration and casing vibration measurement?

Shaft vibration : relative value
Casing vibration : absolute value

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