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302112385 New characterization methods of AE sensors.  
This paper reports on experiment on characterizing AE sensors commonly available and utilized. Many AE applications need to detect plate waves, but no calibration scheme for these waves is...
302112384 Comparison of acoustic emission produced during bending of various oxide ceramic and short fiber oxide ceramic matrix composites.  
AE can be used in characterization of oxide ceramic and ceramic matrix fiber composites. In oxide systems the AE activity was influenced by chemical composition, sintering temperature and...
302112383 Use of AE method for detection of steel lamination in the industrial pressure vessel.  
This paper discusses results of two AE tests performed of the pressure vessel within a 5-year period. The AE testing capabilities in detecting the lamination defects are demonstrated. This...
302112382 E07.04--Overview of current and developing ASTM acoustic emission (AE) standards.  
302112381 Acoustic emission inspection of rail wheels.  
The ever-increasing demand for safer and faster surface transportation such as railway imposes many challenges for the inspection of critical components such as train axes and wheels....
302112380 AE-SiGMA analysis in Brazilian test and accelerated corrosion test of concrete.  
The moment tensor analysis of AE waveforms has been developed and is available for identifying crack kinematics of a location, a crack-type and a crack orientation in a material as the...
302112379 Acoustic emission analysis and thermo-hygromechanical model for concrete exposed to fire.  
High performance concrete (HPC) is often used in tunneling, for columns of high raise buildings and similar structures, which require high compressive strength. However, when exposed to high...
302112378 AE signals during laser cutting of different steel sheet thicknesses.  
Laser cutting is an established industrial method for cutting of various steels in the production process. However, each laser cut poses a question of quality estimation during and immediately...
302112377 Comparison of acoustic emission signal and x-ray diffraction at initial stages of fatigue damage.  
This contribution treats the evaluation of degradation processes appearing during the cyclic loading of the samples from Al alloys EN AW-2017/T4 and EN AW-6082/T6. Two NDT methods have been...
302112376 Analysis of fracture resistance of tool steels by means of acoustic emission.  
The automotive manufacturers currently use advanced high-strength steels (AHSS) to produce lightweight vehicles with increased safety performance. While showing excellent strength-to-weight...
302112375 Acoustic emission event identification with similar transfer functions.  
A special similarity measurement for acoustic emission (AE) events based on sampled signals from multiple channels was developed. Data from pairs of channels is processed in a way that events with...
302112374 Simulation of lamb wave excitation for different elastic properties and acoustic emission source geometries.  
In the present study the influence of microscopic elastic properties and the geometry of the acoustic emission (AE) source are investigated by finite element simulation. We investigate the...
302112373 Use of cluster analysis of acoustic emission signals in evaluating damage severity in concrete structures.  
AE technique gained increasing interest in the last decade in the field of civil engineering as a monitoring methodology and as an assessment tool for safety and reliability evaluation of...
302112372 Discrimination of acoustic emission hits from dynamic tests of a reinforced concrete slab.  
In the evaluation with acoustic emission (AE) of the damage and state of a concrete structure under a dynamic force, the most relevant information come from the AE hits produced by cracking...
302112371 Intelligent AE signal filtering methods.  
One problem of the acoustic emission (AE) testing is a high level of noise affecting the diagnosis results. Electric noise, electromagnetic interference, background acoustic noise, and...
302112370 Neural network AE source location apart from structure size and material.  
AE localization procedures using artificial neural networks (ANN) represent extremely effective alternative to classical triangulation methods. Nevertheless, their application always requires...
302112369 Acoustic emission source location in plate-like structures using a closely arranged triangular sensor array.  
In order to identify the location of acoustic emission (AE) sources in large plate-like structures it typically requires the use of at least three widely spaced sensors. The distance between these...
302112368 Acoustic emission activity of spruce sapwood becomes weaker after each dehydration-rewetting cycle.  
Acoustic emission (AE) during dehydration at ambient temperature was compared between fully saturated fresh Norway spruce (Picea abies (L.) Karst.) sapwood and sapwood exposed to two...
302112367 Use of acousto-ultrasonic techniquesto determine properties of remanufactured particleboards made solely from recycled particles.  
Properties of particleboard manufactured entirely from recycled particleboard were determined and a method for processing three-layered particleboard from all-recycled particles was described....
302112366 Waveform analysis of acoustic emission monitoring of tensile tests on welded wood-joints.  
Wood welding is a relatively recent procedure for preparing joints between pieces of wood that shows promising potential for avoiding some of the problems related to conventional adhesive jointing...
302112365 On lamb modes as a function of acoustic emission source rise time.  
A study was carried out to examine Lamb-wave modal content as a function of the acoustic emission (AE) source rise-time. The study used a validated finite-element code to model the source...
302112364 Acoustic emission monitoring of steel-fiber reinforced concrete beams under bending.  
The present paper describes acoustic emission (AE) behavior of concrete under four-point bending. Different contents of steel fiber were included to investigate their influence on the...
302112363 Acoustic emission testing--defining a new standard of acoustic emission testing for pressure vessels: part 2: performance analysis of different configurations of real case testing and recommendations for developing a new guide for the application of acoustic emission.  
Several regulatory rules, such as the Best Practices Guideline (GBP) [1], exist for acoustic emission (AE) testing of pressure vessels in France and the rest of the world and allow AE testing...
302112362 Estimation of crustal structure in Horonobe area, Hokkaido, Japan, using multiplet-clustering analysis.  
Hypocenter locations of shallow earthquakes in Horonobe area, northern Hokkaido, Japan, which is near the convergent boundary between Okhotsk and Amuria plates, were determined to reveal the...
253927176 Acoustic emission testing--defining a new standard of acoustic emission testing for pressure vessels: Part 1: quantitative and comparative performance analysis of zonal location and triangulation methods.  
For decades now, acoustic emission (AE) testing of pressure vessels has been used in France, Europe and the rest of the world. There are several regulatory rules, codes and standards worldwide,...
253927175 A generic technique for acoustic emission source location.  
Acoustic emission (AE) source location is an essential part of any quantitative AE test as it provides information about damage mechanisms and allows spatial separation so that signals from...
253927174 Study of identification and removal method for drop noise in AE measurement of tanks.  
Recently, the corrosion evaluation technology of tank floors by acoustic emission (AE) method has been put to practice in Japan. However, the corrosion evaluation with the AE method requires...
253927173 Acoustic emission method for solving problems in double-bottom storage tanks.  
The paper describes the examples of AE method in industry for detecting and locating leaks in constructions of double bottom storage tanks. The tests were made on new and modernized tanks in...
253927172 Flexural failure behavior of RC beams with rebar corrosion and damage evaluation by acoustic emmission.  
It is important to interpret and evaluate the fracture mechanism of deteriorated concrete structures with rebar corrosion. Monitoring by means of acoustic emission (AE) technique based on the...
253927171 Contribution of acoustic emission to evaluate cable stress corrosion cracking in simulated concrete pore solution.  
Failure of high-strength steel cables of prestressed-concrete structures (PCS) is becoming a serious problem, as the deterioration of structures progresses due to corrosion induced in severe...
253927170 Effect of shot peening on the delayed fracture using the Almen strip and AE technique.  
This research aims to study the effect of shot peening on the delayed fracture using the Almen strips and AE technique. The Almen strip is a thin spring-steel coupon for measuring the peening...
253927169 Corrosion detection by fiber optic AE sensor.  
CUI (corrosion under insulation) of the piping at industrial plants gathers more attention than ever. Currently, plant owners need to shut down their operation, scaffold, disassemble insulation,...
253927168 Monitoring of pipe clogging by mussels utilizing an optical fiber AE system.  
Clogging of pipes caused by bivalves such as mussels is a serious problem preventing safe operation of plants. Effective early detection of mussel clogging was studied using an optical fiber AE...
253927167 Electromagnetic method of elastic wave excitation for calibration of acoustic emission sensors and apparatus.  
We propose a new sensor testing technique, which may be a good candidate for the absolute sensor calibration, for the routine laboratory and in-field sensor response checking and for selecting...
253927166 Distinct element analysis for rock failure considering AE events generated by the slip at crack surfaces.  
As the fundamental research of rock fracture, we have simulated the uniaxial compression test of rock using the distinct element method (DEM) and discussed the influence of the slip at crack...
253927165 Acoustic emission for characterizing behavior of composite concrete elements under flexure.  
Acoustic emission (AE) measurement was used to assess the behavior of concrete beams subjected to flexural loading. Plain concrete specimens and those with vinyl fiber-reinforced mortar layer...
253927164 Crack growth monitoring with hierarchical clustering of AE.  
This paper presents a sequence of signal processing and hierarchical clustering techniques utilized to process signals with low signal-to-noise ratio (SNR) measured by multiple AE sensors. Noise...
253927163 Identification of AE multiplets in the time and frequency domains.  
Previous studies by the authors have revealed that AE multiplets, which are groups of events with closely similar waveforms, can be used effectively to precisely delineate structures inside...
253927162 Acoustic and electromagnetic emission from crack created in rock sample under deformation.  
In order to characterize the generations of electromagnetic emission (EME) and cracks created inside the materials in detail, we measured EME under monotonously increasing and repeated...
253927161 About plastic instabilities in iron and power spectrum of acoustic emission.  
Plastic instabilities are investigated in iron with different purity by means of acoustic emission (AE) power spectral analysis. Special attention is paid to AE accompanying the yield drop...
253927160 Fracture behavior in bone characterized by AE wavelet analysis.  
Fatigue tests of bovine cortical bone were carried out. Compressive stress was applied along longitudinal axis of bones and fracture surfaces were parallel to the loading direction. Damage...
253927159 Some observations on Rayleigh waves and acoustic emission in thick steel plates.  
Rayleigh or surface waves in acoustic emission (AE) applications were examined for nominal 25-mm thick steel plates. Pencil-lead breaks (PLBs) were introduced on the top and bottom surfaces as...
253927158 Acoustic emission from impacts of rigid bodies.  
The characteristics of stress waves accompanying the collisions of rigid bodies are investigated. It is shown that high-frequency transducer of acoustic emission apparatus transforms initial...
253927157 Fundamental study on integrity evaluation method for COPVs by means of acoustic emission testing.  
It is important to evaluate the integrity of composite overwrapped pressure vessels (COPVs) used for space applications. In this study, applicability of acoustic emission (AE) monitoring to the...
253927156 Damage onset and growth in carbon-carbon composite monitored by acoustic emission technique.  
Carbon-carbon (C/C) composites with different densities (1.8, 1.35, 0.8 g/[cm.sup.3]), produced by chemical vapor infiltration (CVI) were tested mechanically under quasi-static loading in bending...
253927155 AE analysis on blade cutting pressure adjustment in dynamic cutting of paperboard.  
A method for cutting-blade pressure adjustment during dynamic cutting of paperboard is introduced in a combination of resin bridgeless die and high-carbon center-bevel blade. In this method, the...
253927154 Acoustic emission monitoring and fatigue life prediction in axially loaded notched steel specimens.  
This research applies the nondestructive evaluation (NDE) methodology used in aviation to monitor structural steel in the form of axially loaded notched specimens for fatigue-life prediction. It...
253927153 Acoustic emission leak detection of liquid filled buried pipeline.  
Several limitations and difficulties exist in the inspection and maintenance of underground pipelines that cannot use pigs (pipeline inspection gauges). Leaking is unavoidable in such buried...
253927152 Acoustic emission as a monitoring method in prestressed concrete bridges health condition evaluation.  
A system, based on acoustic emission (AE) monitoring technique, has been studied at Kielce University of Technology for several years. A reference-signals database has been prepared based on...
253927151 Acoustic emission testing of a difficult-to-reach steel bridge detail.  
Discovery of a 130 mm (5 in) long full-depth crack in a fracture-critical member of a large steel through truss bridge led to the deployment of acoustic emission (AE) testing in concert with...

Matches 1 - 50 out of 147 1 2 3 >