A method and system for dynamic locating of a fault observed in a defective component related to a forging operation, in which: a processor models a shaping operation of a component by forging, as per a set of successive models of the component; a processor adds a fault plotter to a first model of the set of models, in a zone corresponding to a region of the fault in the defective component to obtain a first plotted model; and a processor tracks the plotter in time from the first plotted model during the modelling to locate an origin of the fault.

A method for measuring fracture characteristics of adhesive polymeric material comprises: (i) bonding a sample to a rigid substrate; (ii) cooling the sample from a first temperature to a second temperature such that thermally-induced stresses are generated within the sample, wherein the thermally-induced stresses generate an inward-growing three-dimensional spiral crack within the sample; (iii) detecting, by three or more AE piezoelectric sensors, mechanical transient waves generated during development of the inward-growing three-dimensional spiral crack within the sample and determining the accurate 3D geometry of the spiral using source location technique; (iv) visualizing the two-dimensional spiral cracking pattern deposited on a surface of the rigid substrate and measuring the precise width of the crack; (v) determining, using the detected mechanical waves and the visualized deposited sample, AE-based fracture characteristics of the sample; and (vi) reporting the determined one or more fracture characteristics of the sample.

A sample testing cartridge is usable to perform a variety of tests on a viscoelastic sample, such hemostasis testing on a whole blood or blood component sample. The cartridge includes a sample processing portion that is in fluid communication with a sample retention structure. A suspension, such as a beam, arm, cantilever or similar structure supports or suspends the sample retention portion relative to the sample processing portion in a unitary structure. In this manner, the sample retention portion may be placed into dynamic excitation responsive to excitation of the cartridge and correspondingly dynamic, resonant excitation of the sample contained within the sample retention portion, while the sample processing portion remains fixed. Observation of the excited sample yields data indicative of hemostasis. The data may correspond to hemostasis parameters such as time to initial clot formation, rate of clot formation, maximum clot strength and degree of clot lysis.

Apparatus and associated methods relate to determining liquid-water concentration in a cloud atmosphere based on a frequency of resonance of a magnetostrictive resonator and/or a temporal variation of the resonant frequency of the magnetostrictive resonator. The magnetostrictive resonator is configured to resonate at a resonant frequency indicative of a measure of ice accumulation upon an exterior surface of the magnetostrictive resonator. When in liquid-water ambient, however, the magnetostrictive resonator has a resonant frequency less than a baseline resonant frequency. When in the liquid-water ambient, the magnetostrictive resonator also has temporal variations in resonant frequency that exceed one part in ten thousand. Using one or both of these resonant-frequency responses to liquid-water ambient, a signal indicative of liquid-water content can be generated.

A sample testing cartridge is usable to perform a variety of tests on a visco-elastic sample, such hemostasis testing on a whole blood or blood component sample. The cartridge includes a sample processing portion that is in fluid communication with a sample retention structure. A suspension, such as a beam, arm, cantilever or similar structure supports or suspends the sample retention portion relative to the sample processing portion in a unitary structure. In this manner, the sample retention portion may be placed into dynamic excitation responsive to excitation of the cartridge and correspondingly dynamic, resonant excitation of the sample contained within the sample retention portion, while the sample processing portion remains fixed. Observation of the excited sample yields data indicative of hemostasis. The data may correspond to hemostasis parameters such as time to initial clot formation, rate of clot formation, maximum clot strength and degree of clot lysis.

A system for quality monitoring of additive manufacturing includes an acoustic emission (AE) sensor configured to be attached to an additive manufacturing substrate and to output a sensor signal indicative of acoustic vibrations received at the AE sensor and an AE module. The AE module is configured to receive the sensor signal from the AE sensor and process the sensor signal to determine at least one characteristic of an additive manufacturing process and/or an additively manufactured article.

A composite material joined with a curable phenolic resin adhesive, with the phenolic resin adhesive comprising a stiffening agent precursor, and with the stiffening agent precursor selected to react with reaction by-products of the phenolic resin adhesive during curing to produce a reaction product stiffening agent in a cured bonding layer that is detectable by ultrasound, resins comprising the stiffening agent precursor, bonding layers comprising the reaction product stiffening agent, and methods for making the composite material joints and inspecting the composite material joints are disclosed.

A new cement formulation includes a base cement slurry and an admixture of acoustic metamaterial particles, the acoustic metamaterial particles each having a dense inner core and compliant surrounding matrix. The cement formulation exhibits a substantial increase in transmission loss over the base cement slurry at a first frequency, and does not exhibit a substantial increase in transmission loss over the base cement slurry at a second frequency. A new cement interrogation technique involves transmitting acoustic energy at and near the band-gap frequency of an acoustic metamaterial, detecting an acoustic response and analyzing it for band-gap performance involving substantially elevated transmission loss at or near a given first frequency that rapidly falls off at nearby frequencies, determining that the cement formulation is present in regions exhibiting band-gap performance, and determining that the cement formulation is not present and/or has been compromised in regions not exhibiting band-gap performance.

The invention relates to a method of monitoring the interior of a pipeline (1) positioned in contact with a soil (S) below a water mass (E), comprising implementation of the following steps by data processing means (11): (a) for at least one position along said pipeline (1), obtaining acoustic data descriptive of at least one cross-section of said pipeline (1) at said position, acquired by a mobile acoustic acquisition device (20) in said water mass (E), (b) estimating by quantitative migration from said acoustic data an estimated relative impedance perturbation profile in at least said cross-section of said pipeline (1).

Apparatus is provided featuring a signal processor or signal processing module configured at least to: receive signaling containing information about a radiation impedance of a piston vibrating a process medium, including a fluid or slurry; and determine a speed of sound or density measurement related to the process medium, based at least partly on the signaling received. The signal processor or signal processing module may determine a speed of sound measurement related to the process medium, based on at least partly on the density of the process medium, including where the density of the process medium is known, assumed or determined by the signal processor or signal processing module, or determine a density measurement related to the process medium, based on at least partly on the speed at which sound travels in the process medium, including where the speed of sound of the process medium is known, assumed or determined by the signal processor or signal processing module.