Patent
Configurations and methods for ultrasonic time of flight diffraction analysis
Barry Messer,Matthew Yarmuch +1 more
Reads0
Chats0
TLDR
In this article, a low-absorption housing that at least partially encloses an ultrasound transducer is used to detect lack-of-fusion defects in polymeric pipes.Abstract:
An ultrasound test apparatus for polymeric materials (e.g., plastic pipes) includes a low-absorption housing that at least partially encloses an ultrasound transducer, wherein the transducer emits a low frequency wide angle ultrasound beam with a narrow bandwidth. In especially preferred configurations and methods, the apparatus will detect flaws in polymeric pipes, and especially in welds or stressed zones of such pipes, wherein defects of less than 4% of the wall thickness (up to 4 inches) are detected. Further disclosed are configurations and methods for non-destructive detection of lack-of-fusion defects in polymeric pipes.read more
Citations
More filters
Patent
Medical sensor for reducing motion artifacts and technique for using the same
TL;DR: In this paper, a flexible sensor is provided with a stiffening member to hold the emitter and detector of the sensor in a relatively fixed position when applied to a patient, and an annular or partially annular sensor is adapted to hold an emitter, and a clip-style sensor with a spacer that controls the distance between the ematter and detector.
Patent
Infrastructure monitoring devices, systems, and methods.
TL;DR: In this paper, an infrastructure monitoring system and method include multiple communications devices, at least one communications device is coupled to an element of the infrastructure, and each of the devices communicate with the other devices.
Patent
Enclosure for leak detector
TL;DR: A leak detection structure for attachment to a fire hydrant includes an enclosure, the enclosure defining a cavity internal to the enclosure and a leak detection subassembly located in the cavity, the leak detector subassembly including at least one leak detection sensor and at least a circuit as discussed by the authors.
Patent
Detecting leaks in a fluid distribution system
Marc Bracken,Shabbir Yusuf +1 more
TL;DR: In this paper, the authors described a method for detecting leaks in a fluid distribution system using historical leak detection information collected from a sensor in the system and collected in a database and a baseline is determined from the historical leak information.
Patent
Method and apparatus for measuring flaw height in ultrasonic tests
TL;DR: In this paper, an ultrasonic wave is launched by a transmitting probe 1 into a specimen 20 in a direction oblique to a flaw 24 to generate diffracted waves at the tip 25 of the flaw 24.
References
More filters
Patent
Device for the non-destructive testing of hollow tubular objects by means of ultrasound
TL;DR: In this paper, the authors propose a non-destructive testing of hollow tubular objects using ultrasound using an array of annular individual transducers in a coaxial fashion and two annular arrays, each of which consists of an assembly of juxtaposed transducers.
Patent
Microwave-assisted liposuction apparatus
TL;DR: In this paper, a method and apparatus for heating fatty tissue to facilitate liposuction removal of fat, and by additional heating to enable denaturing of the tissue structure, is presented.
Patent
Static correction method for exploration seismic data using first arrivals of seismic waves
Xixiang Zhou,Benshan Zhong +1 more
TL;DR: In this article, a shorter spatial wavelength static correction method for exploration seismic data using first arrivals according to the invention includes the steps of: based on a quadratic curve fitting to the first arrivals, which are picked up from seismic wave records of receiver gathers after the field statics, obtaining the difference Δ i,j between the observed first arrival time t ij of the receiver point j with respect to the shot point i and the corresponding time value of the fitted quad ratic curve; and forming the original matrix Δ having m×n elements Δ i,j, where
Patent
Transmission system of aerial ultrasonic pulse and ultrasonic transmitter and receiver used in the system
TL;DR: In this article, a system for aerially transmitting an ultrasonic view of a vibration mode, small in angle of direction, in a clear state and to a transmitter and a receiver used in the system is described.
Patent
Apparatus and method for ultrasonic stress measurement using the critically refracted longitudinal (Lcr) ultrasonic technique
TL;DR: In this paper, the latent stress in both flat and curved materials can be measured using critically refracted longitudinal ultrasonic technique using a frame to hold a hydraulic piston, which is used to apply an adjustable force against the probes.