US4528852A - Method and instrument for determining the ... - Google

A method and system for determining the lubricational condition of an operating rolling element bearing utilizing a shock pulse measuring technique. A schedule of occurring shock pulses and lubricant film parameters for a running rolling element control bearing is established. The magnitude of occurring shocks within the operating bearing is determined and the lubricational condition of the

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Experimental investigation of ball bearing lubrication conditions by

conditions by shock pulse method Shock Pulse Meter 6−2000 tester with accelerometer The 6−2000 is switched on by pressing any of the five function keys. Power down function is automatic and happens approx 30 seconds after a function key is pressed. If the instruments fails to power down within one

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PDF User Guide - archive-resources.coleparmer.comPDF

The Shock Pulse Method The Bearing Checker is based on the Shock Pulse Method. Measurements with the SPM method give an indirect measure of impact velocity, i.e. the difference in velocity between two bodies at the moment of impact. At the point of impact, a mechanical compression wave (a shock pulse) arises instantly in each body.

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SPM HD-An Introduction v1.1 - Noria Corporation

A shock pulse wave front hits the shock pulse transducer. The wave front reaches the inside of the transducer and passes the Piezo crystal, then travels along a brass bar. When the wave

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Vibration analysis on a bearing using shock pulse measuring

PULSE MEASURING TECHNIQUES. Norlelawaty Binti Osman Shock Pulse Analyzer is employed in order to achieve the objectives of the study.

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VIBRATION ANALYSIS ON A BEARING USING SHOCK

Figure 2.2: A diagram showing a shock pulse. The graph gives the shock pulse behavior 8 Figure 2.3: The vibration after the shock pulse. The diagram shows the movement and characterized

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Shock Pulse Measurement - Web-Shop KSB

The shock pulse method is based on the knowledge that a shock, i.e. a mechanical impact, causes particles to accelerate at the point of impact.

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Shock Pulse Method - Vibration Analysis & Machinery Diagnostics Forum

I have attached a description that is short and pretty good part from the things around SPM, it is named Shock Pulse Method, it is not invented by SKF but they had a cooperation in the 1970's and later split up otherwise it looks pretty clear but maybe a few more methods exist. Olov Attached Files envelope_analysis.pdf (864.32 KB, 47 views)

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U se r G u id e - Cole-Parmer

The Bearing Checker is based on the Shock Pulse Method. Measurements with the SPM method give an indirect measure of impact velocity, i.e. the difference in 

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Mechanical shock values applied in condition monitoring of

pulse method is selected as the analyses tool to measure the mechanical shock. Shock pulse monitoring does not focus on the vibration phases but.

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PDF AN INTRODUCTION TO THE SHOCK RESPONSE SPECTRUM - VibrationdataPDF

The shock response spectrum is a calculated function based on the acceleration time history. It applies an acceleration time history as a base excitation to an array of single- degree-of-freedom (SDOF) systems, as shown in Figure 3 Note that each system is assumed to have no mass-loading effect on the base input. C

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What Is Shock Pulse? - CBM CONNECT® Powered by Mobius Institute

Vibration enveloping is commonplace for many of you. The shock pulse method was invented in the late 1960s. In rolling element bearings, there is a phenomenon where electric waves, or elastic waves, or shock pulses, or impact signals, are generated. The amplitude of these impacts is determined by three different parameters.

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Condition Monitoring - DV Ingenieria

monitoring unit employing the two most reliable methods for automatic condition monitoring: shock pulse and vibration severity measurements. MG-4 is.

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MIL-STD-202G METHOD 213B SHOCK (SPECIFIED PULSE) - Q

3. SHOCK PULSES. Two types of shock pulses, a half-sine shock pulse and a sawtooth shock pulse, are specified. The pulse shape and tolerances are shown on figures 213-1 and 213-2, respectively. For single degree of freedom systems, a sawtooth shock pulse can be assumed to hav e a damage potential at least as great as that of the

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ShockPulse-SE | Olympus America | Medical

Dual Action Lithotripsy System The Shockpulse-SE (Stone Eliminator) is the next generation Cyberwand system from Olympus, offering dual action lithotripsy with proprietary technology to simultaneously produce constant ultrasonic wave energy and intermittent shockwave (ballistic/mechanical) energy via a revolutionary single probe design. The ShockPulse offers

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BALTECH VP-3450 - ROKADE Group of Companies

Interference from other pulse sources;. The shock pulse method can be illustrated by the example of a metal ball fall on a metal object.

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Measuring Shock Pulse another approach to Front Line

The enveloping technique used by vibration analysis attempts, by manipulating the signal, to make shocks visible and measurable in the frequency domain, simply 

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PDF Shock Pulse goes Spectrum - Plant MaintenancePDF

The shock pulse method was the start of condition monitoring and condition based maintenance, targeting the machine part that causes most breakdowns, the bearings. The scientific task was to find a physical event that mirrored bearing con- dition, quantify it, and transform the mea- sured value into a condition reading.

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19971126 030 DQTIC - DTIC

The Shock Pulse Method is the monitoring and analyzation of high freauency compression (shock) waves generated by a bearing while rotating. From this.

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Reliabilityweb What is Shock Pulse Method?

This Shock Pulse is in the ultrasonic frequency band and typically occurs around a center frequency of 36 kilohertz. The amplitude of the Shock Pulse is relative to the velocity of the

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PDF SPM HD-An Introduction v1.1 - Noria CorporationPDF

The shock pulse transducer is designed to respond in a clearly defined manner when exposed to shock pulses. Because shock pulses contain a broad range of frequencies, they will also contain 32 KHz components that will trigger the transducer to oscillate. The behavior when exposed to a shock pulse is well defined.

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On the informativeness of the shock pulse method for

where τ – the shock pulse duration, ms; ρ1 and ρ2 – the density of the hammer material and the material under test, respectively, kg/m 3 ; V 0 – relative velocity of bodies at the initial

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Prognostics of rolling element bearings using shock pulse

In recent decades, the shock pulse method has been developed to detect faults in the early stage of rolling element bearings degradation.

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Shock Pulse goes Spectrum - Maintenance World

Shock Pulse goes Spectrum Lou Morando, managing director of the SPM office in the U.S., explains the back-ground. ”I have to mention some ele-mentary physics to explain what we are

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MIL-STD-202G METHOD 213B SHOCK (SPECIFIED PULSE

3. SHOCK PULSES. Two types of shock pulses, a half-sine shock pulse and a sawtooth shock pulse, are specified. The pulse shape and tolerances are shown on figures 213-1 and 213-2, respectively. For single degree of freedom systems, a sawtooth shock pulse can be assumed to hav e a damage potential at least as great as that of the

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Bearing Condition Evaluation Based on the Shock Pulse

Compared with vibration-based measurements, the acceleration-sensor-based shock pulse method (SPM) has been proven to be more effective, 

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