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6898978 |
Geometry for pulsed acoustic measurements of particle size
An apparatus for making pulsed acoustic measurements to determine particle size in a sample ( 1 ) such as a colloid. The apparatus includes two electrodes ( 2 ) between which an electric voltage is...
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6829959 |
Apparatus and method for moving a sensor over a workpiece
The apparatus and method for moving a sensor over a workpiece includes a sensor, and an actuating member. The sensor, such as a non-destructive test sensor, is carried by the actuating member, and...
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5623100 |
Ultrasonic inspection and imaging intstrument
In an ultrasonic inspection and imaging instrument, a pulse generator and a burst wave generator are provided in association with the activation of an ultrasonic probe by the pulse generator and in...
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5553499 |
Ultrasonic microscope having an automatic focusing adjustment mechanism
Ultrasonic wave converged by an acoustic lens is made incident onto a sample and wave reflected from the sample is received and converted into received electric signal by a transducer. A part of...
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5351544 |
Measuring apparatus using an ultrasonic wave to provide flaking state detection for a specimen on the basis of freqency analysis of a wave reflected by the specimen
A measuring apparatus using an ultrasonic wave according to the invention transmits an ultrasonic wave pulse into a specimen, receives the echo reflected by the specimen and converts it into an...
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5339691 |
Ultrasonic test system
An ultrasonic system for determining the quality of concrete under water hout inaccuracies caused by electromagnetic interference from the ultrasonic generator. An ultrasonic generator applies...
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4631683 |
Acoustic detection of contact between cutting tool and workpiece
A system and method for monitoring vibrations of a machine tool metal-cutting tool insert and interpreting them to promptly detect the initial touch to the workpiece and signal the tool to stop...
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4581937 |
Method of suppressing unwanted indications in automated ultrasonic testing
The invention relates to a method of suppressing unwanted indications in automated ultrasonic testing of a test piece. In order to improve the suppression of unwanted indications, in particular in...
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4482859 |
Object displacement sensor and device for measuring the rotation speed and vibration frequency of a rotor
An object displacement sensor specifically adapted for high speed counting of passing nonmagnetic objects is disclosed which has a resonant circuit made up of at least one inductive element 2 and a...
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4423634 |
Device for the activation of an apparatus for measuring acoustic emission by detection of background noise
An apparatus for measuring acoustic emission is activated only at critical periods which are determined by detection of the background noise from a reference level. An acoustic emission transducer...
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4386530 |
Ultrasonic imaging equipment
An ultrasonic imaging equipment employing a transducer which includes an acoustic propagating medium formed with a concave surface at one end thereof and formed with a piezoelectric thin film on...
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4366712 |
Ultrasonic testing of sheet and plate stock
Sheet or plate stock is used as to defects by a row of ultrasonic transmitting transducers on one side and receiving transducers on the other. The transmitting transducers receive...
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4361042 |
Digital type ultrasonic holography apparatus
A digital type ultrasonic holography apparatus includes a clock generator for generating a clock pulse signal having a fixed period, a transducer for transmitting spike-like ultrasonic pulses...
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4307612 |
Method and means for ultrasonic inspection
Ultrasonic inspection of a structure such as steel tubing is enhanced by moving the ultrasonic wave transmitter and receiver through the pipe and periodically injecting an ultrasonic pulse into the...
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4213184 |
Signal processor for processing ultrasonic receiver signals
A signal processor is provided which uses an analog integrating circuit in conjunction with a set of digital counters controlled by a precision clock for sampling timing to provide an improved...
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4198866 |
Method and device for ultrasonic inspection of materials
A method for ultrasonic inspection of materials in which a reception and processing of ultrasonic vibrations reflected from a material being inspected is followed by separating signals from noise...
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4187725 |
Method for ultrasonic inspection of materials and device for effecting same
According to the proposed method for ultrasonic inspection of materials, a eception and processing of ultrasonic vibrations reflected from a material being tested are followed by separating signals...
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4131857 |
Autocorrelated pulse processor
Electro-optical gaging system has an electronic camera which develops a raw camera pulse having a width that approximates the dimension between edges of an object imaged on the camera. A camera...
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4044606 |
Sensing thickness of a thin body disposed between two diverse surfaces
The thickness of a layer of oil on water is obtained in digital form, which in one embodiment is recorded on a visually identifiable analog type display chart. An underwater ultrasonic transducer...
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3918295 |
Method of nondestructively testing materials by ultrasound
A method of nondestructively testing materials by ultrasound comprises continuously supplying a non-contact-making transmitter with electrical high-frequency power at a suitable frequency for...
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3732726 |
METHOD OF AND APPARATUS FOR DETERMINING THE INTERNAL DIAMETER OF PIPES
A method of and an apparatus for measuring the internal diameter of a pipe in which two inductive displacement pickups detect the external diameter of the pipe and an ultrasonic resonance system is...
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3690156 |
NOISE GATE FOR ULTRASONIC TEST APPARATUS
An ultrasonic nondestructive test system is described which includes a noise gate which is capable of immediately removing noise signals from the input signals before they reach the receiver. The...
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3604250 |
COUPLING NETWORK FOR AN ULTRASONIC TESTING SYSTEM
This disclosure relates to an ultrasonic-testing system, and includes circuitry for damping low frequency oscillations in an ultrasonic transmitted pulse signal. A low frequency filter is connected...
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3575042 |
AUTOMATIC DIGITAL RECORDING WELD DEFECT DETECTOR
An automatic weld inspection system is described having an ultrasonic defect detector of the pulse reflection type. A search unit is mounted in a mechanism which moves it in incremental steps in...
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3482434 |
ULTRASONIC NONDESTRUCTIVE TESTER INCLUDING MEANS FOR SEPARATING ELECTRICAL NOISE FROM THE ELECTRICAL SIGNALS
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3435405 |
ULTRASONIC VEHICLE PRESENCE DETECTOR
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3435406 |
SONIC VEHICLE DETECTOR USING NOISE BLANKING
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3404560 |
Method and apparatus for suppressing noise during ultrasonic testing
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3346068 |
Focusing and scanning either or both of a plurality of seismic sources and seismometers to produce an improved seismic record
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3320797 |
Ultrasonic internal flaw detecting apparatus for hot metal
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3295362 |
Method of and apparatus for ultrasonic inspection utilizing correlation techniques
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3228232 |
Ultrasonic inspection device
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