vibration

Articles About vibration


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1 Vibration Analysis Goes Mainstream (June 2017)

Using vibration analysis to evaluate machine health has many benefits, and with advances in sensor, recording, and analysis technology, vibration analysis is now within the reach of even small organizations.

2 Opening the Envelope on Bearing Vibration (September 2016)

Experienced operators can often tell if a machine is not working properly, on the basis that it does not ‘sound right.’ The same principle can be applied — using modern electronics — to identify the exact cause of the problem. Sensitive accelerometers can detect and analyze the vibrations from industrial equipment, highlighting problems such as misalignment or bearing imbalance. The technique is known as vibration analysis. It can identify bearing failure in the very early stages, when there is a microscopic defect on the raceway, for example. The problem is that the identifying signal is usually drowned out in all the other noise emanating from the machine.

3 Predictive Maintenance - There Is an App for That (June 2013)

Implementing a predictive maintenance (PM) program can be tough. Despite its proven success, many companies have been operating the same way for over 50 years and don’t know where to start. Understanding where to start and where to focus is critical. The intention of this article is to give insight to start and sustain an effective program using today’s technology and devices.

4 When a Good Gear Drive System Goes Bad (October 2012)

Even when the critical components of industrial power transmission gear drive systems are properly designed, specified and manufactured consistent with application requirements, performance problems can develop over time and failure may follow.

5 Product News (June 2011)

The complete Product News section from the June 2011 issue of Power Transmission Engineering.

6 Acoustic Analysis of Electric Motors in Noisy Industrial Environment (June 2016)

This paper presents a method for the acoustic analysis of electric motors in noisy industrial environments. Acoustic signals were measured via acoustic camera 48-microphone array, which has the capability to localize a sound (or sounds) source and, in turn, separate those sounds from intrusive background noise. These acoustic analysis results are then compared with vibration measurements; vibration monitoring is a well-known and established technique used in condition monitoring, and in this work vibration measurements were used as a reference signal for assessment of the value of the acoustic measurements. Vibration signals were measured by piezoelectric accelerometers. Two induction motor cases were examined — a healthy motor case, and a combination of static eccentricity with soft foot case. As shown, acoustic analysis appears to be a valuable technique for condition monitoring of electric motors — particularly in noisy industrial environments.

7 The Hidden Cost of Incomplete Hydrodynamic Bearing Maintenance (April 2017)

Reliability and maintenance engineers can improve uptime and save money on both long-term maintenance and downtime costs by properly diagnosing and correcting bearing vibration issues when they exceed their acceptable limits. This requires inspecting the housing as well as the liner for wear, and replacing them as a pair when the housing is worn, so that wear-in between the mating surfaces can occur.

8 Plastic Replacing Metal in Coupling Applications (Spring 2007)

When it comes to selecting a connecting element between a drive motor and a pump unit, engineers most often choose an elastomeric coupling because of its failure protection and its vibration damping capabilities. Elastomeric couplings, traditionally manufactured with metallic hubs, feature a rugged and robust design noted for its simplicity.

9 Preventing Fretting Fatigue in Blade Dovetail Roots by Modifying Geometry of Contact Surfaces (August 2013)

Dovetails, gears and splines have been widely used in aero engines where fretting is an important failure mode due to loading variation and vibration during extended service. Failure caused by fretting fatigue becomes a prominent issue when service time continues beyond 4,000 hours. In some cases, microslip at the edge of a contact zone can reduce the life by as much as 40–60 percent.

10 Best Practices for Bearing Protection (June 2014)

For either brand-new motors or those already in service, "best practices" means that informed technicians can make use of the latest diagnostic techniques (vibration analysis, thermography, shaft-voltage testing, etc.) to prevent electrical bearing damage -- either at the very beginning or very quickly thereafter. If done correctly, the work need only be done once.

11 Pre-Tension Thrust Bearings (December 2014)

What is the recommended method of gripping a spinning shaft (with up to 130 hp of rotational energy) to install pre-tension thrust bearings and conventional thrust bearings (load = hundreds of pounds) when the shaft cannot have any high points because it must pass through an area of tight clearances to assemble? Will snap rings still withstand the harsh vibration of this environment?

News Items About vibration

1 AAC’s New Isolators Designed for Vibration and Noise (April 21, 2006)
A new series of 104 small square and round vibration isolators from Advanced Antivibration Components are designed for vibration and nois...

2 Silicone Gel Base Vibration Mounts From AAC Feature Superior Damping Performance (September 27, 2007)
A new series of double studded silicone gel vibration mounts from Advanced Antivibration Components - AAC feature superior damping perfor...

3 New Light- And Heavy-Duty Knitted Mesh Vibration Mounts From AAC (April 21, 2006)
Two new series of base-mounted stainless steel knitted mesh vibration mounts introduced by Advanced Antivibration Components are designe...

4 AAC’s New Ring Type Natural Rubber Vibration and Shock Mounts Feature Lower Vertical Spring Rate (April 21, 2006)
A new series of ring-type natural rubber vibration and shock mounts from Advanced Antivibration Components features a low natural frequen...

5 Industrial Machine Vibration Mounts from Stock Drive Products (June 15, 2007)
SDP/SI, an ISO 9001 manufacturer of vibration mounts, suspension mounts, vibration isolators, conical bumpers, damped spring mountings, m...

6 New Leaf Spring Vibration Mounts Introduced by Advanced Antivibration Components (April 21, 2006)
A new line of stainless steel leaf spring vibration mounts introduced by Advanced Antivibration Components are designed for use with vari...

7 AAC's New Heavy Duty Stainless Steel Vibration Mounts Designed for Corrosive Environments (July 9, 2007)
A new series of 3 heavy-duty base mounted vibration and shock isolators by Advanced Antivibration Components feature stainless steel mesh...

8 New Vibration Mounts from AAC Feature Finger-Flex Ring and Bushing Isolators (April 2, 2006)
The new V10Z 4 Series of vibration mounts from Advanced Antivibration Components feature unique "Finger-Flex" isolators which are designe...

9 AAC Vibration Mounts and Dampening Components Catalog (June 15, 2007)
The new vibration mount catalog V100 from AAC - features over 1,270 off-the-shelf shock and vibration damping components The company i...

10 New Round Urethane Vibration Isolators From AAC (April 21, 2006)
Two new series of round Urethane vibration isolators from Advanced Antivibration Components are designed for use in severe environments ...

11 Vibration Transmitter Turns Accelerometers into 24/7 Vibration Monitoring Sensors (May 11, 2010)
The model 682A09 ICP in-line 4-20 mA vibration transmitter from IMI Sensors installs in line with any industrial accelerometer and conver...

12 UNILOAD Vibration Mount Catalog from AAC Features Constant Natural Frequency Mounts (CNF Type) (September 27, 2007)
A new vibration mount catalog, "UNILOAD™ Constant Natural Frequency Mounts, V105” has been released by Advanced Anti...

13 AAC Gel Mounts Isolate Vibration (June 2, 2011)
A new series of silicone gel mounts from Advanced Antivibration Components (AAC) are highly effective for isolating electronic equipment....

14 New Vibration Mount Catalog V100 from AAC Features Over 1,270 Off-the-Shelf Shock and Vibration Damping Components (July 9, 2007)
Finding the right vibration mounts for your application has become easier with the publication of a new 240-page catalog "Shock and ...

15 R+W Introduces New Miniature Vibration Damping Drive Shaft (February 26, 2015)
R+W recently expanded upon its design of vibration damping drive shafts, series EZ2, with a new miniature design, size 5. The new si...

16 Emerson Coupling Manages Torsional Vibration (June 25, 2013)
The Kop-Flex MAX-C WB hybrid coupling is a new solution for managing torsional vibration in high-performance drivetrains powered by synch...

17 Altra Couplings Solves Vibration Issues for Large Pumps (August 7, 2014)
A large raw water pumping station in Malaysia was suffering from severe vibration problems with the drivetrains on a number of large pump...

18 QBC Offers Vibration Monitor Meter (February 7, 2013)
A new BETEX professional VibChecker vibration monitor meter from Quality Bearings & Components (QBC) is a light and compact-sized ins...

19 PCB Piezotronics Miniature Accelerometer Designed for Shock and Vibration (April 15, 2006)
The Vibration Division of PCB Piezotronics, Inc. announces release of the Model 352C23 miniature ICP accelerometer, designed for shock an...

20 PCB’s Piezotronics’ Multi-Purpose Vibration Alarm Modules Provide Alarm and Shutdown Protection from Machinery (June 27, 2007)
The Series 684 indicator alarm module from the IMI Sensors division of PCB Piezotronics provides a solution to machine shutdown protectio...

21 PCB’s Triaxial Force Sensors Designed for Aerospace Vibration Testing (April 18, 2006)
The 261A Series Triaxial Force Link Sensors from the Force/Torque Division of PCB Piezotronics Inc. simultaneously measures dynamic and q...

22 Sick Stegmann’s Absolute Encoders Used in High Shock and Vibration Environments (March 15, 2007)
Sick Stegmann Inc. introduces ATM 60-C multi-turn absolute encoders. These IP67 encoders are electronically adjustable, provide resoluti...

23 Double Studded Silicone Gel Vibration Mounts From AAC Feature Superior Damping Performance (September 27, 2007)
The mounts, identified as the V10Z61MTH and V10Z61MMN Series, are designed for light to medium loads of from 2 kgf to 3.5 kgf (4.4 lb. to...

24 Applied Motion SV200 Series Servo Drives Feature Programmable Notch Filters, Anti-Vibration Function and Auto-Tuning (October 28, 2015)
Applied Motion recently introduced its newest line of all digital servo drives, the SV200 Series. These servo drives offer programmable n...

25 Ringfeder Tschan TNR Elastic Couplings Optimize Torsional Vibration During Operation (August 18, 2015)
Ringfeder Power Transmission recently introduced the Tschan TNR, a new model for highly elastic couplings. Unlike commonly used torsional...

26 Hydraulic Institute Announces Pump Vibration Webinar (January 4, 2016)
The Hydraulic Institute (HI) will host a webinar session on Vibration Measurement and Allowable Values for Rotodynamic Pumps. The session...

27 Miki Pulley Couplings Absorb Vibration While Allowing High Misalignment (January 18, 2016)
Miki Pulley is introducing their new Bellowflex Couplings for direct sale to OEM’s in North America. These couplings absorb vibrati...

28 Miki Pulley Couplings are Effective at Dampening System Vibration (April 5, 2016)
Miki Pulley is introducing its unique CPU Pin Type couplings for direct sale to OEM’s in North America. These CPU couplings are hig...

29 Maxon Brushless Motors Offer Low Vibration at High Speeds (August 27, 2010)
Maxon's improved EC 22 motors are equipped with preloaded ball bearings and the latest generation of Neodymium permanent magnets. The...

30 High Capacity Torque Limiter Uses Vibration Damping Jaw Type Coupling (April 9, 2010)
The ST2 series torque limiter from R+W allows for one compact unit to be installed, saving space and cost when into a high horsepower dri...

31 Allegro’s New Low Voltage, Full Bridge Brushless DC Motor Driver Integrates Hall Element Commutation Circuitry to Drive Vibration Motors (August 7, 2007)
Allegro Microsystems introduced a new full bridge motor drive designed to drive low voltage bi-polar brushless D motors. Commutation of t...

32 J.W. Winco Offers Vibration and Shock Absorption Mounts (January 25, 2017)
J.W. Winco, Inc. recently announced it now offers GN 254 Inch and Metric Size Stainless Steel Vibration/Shock Absorption Mounts, Conical ...

33 Silicone Gel Pad Vibration Isolators From AAC Feature Superior Damping Performance (September 27, 2007)
These isolators, identified as the V10Z61MSN Series, are designed for light to medium loads of from 0.5 kgf to 2 kgf (1.1 lb. to 4.4 lb.)...

34 Silicone Gel Tape & Chip Vibration Isolators From AAC Feature Superior Damping Performance (September 27, 2007)
The mounts, identified as the V10Z62MGT and V20Z62MGC Series, are designed for light to medium loads. The gel tape are stocked in 1000 mm...

35 IMI Sensors ’ Vibration Alarm Modules Provide Alarm and Shutdown Protection for Machinery (August 7, 2007)
The Series 684 indicator alarm module from IMI Sensors division of PCB Piezotronics provides a solution to machine shutdown protection wh...