ultrasonic probe/transducer is the heart of any ultrasonic test. inappropriate transducer selection or a poorly manufactured or malfunctioning transducer can severely affect test results regardless of instrumentation capability. we offer a full line of standard and special transducers.
airscan is a non-contact air-coupled ultrasonic inspection technique which differs from conventional water-immersion testing, water-jet testing and dry-coupled testing by using air as the acoustic coupling media between the transducers and the part under test. for most practical applications, airscan is a through-transmission
established in 2004, techna ndt manufactures composite standards, eddy current probes, ultrasonic transducers, and accessories used in the nondestructive testing of commercial aircraft components. we fabricate reference standards for aircraft built by boeing, airbus, mcdonnell douglas, bombardier, fokker and cessna to name a few.
as seen in nbc's nightly news story, our flaw detector, raptor, is utilized to perform ultrasonic testing on fan blades for aircraft engines. bondhub new product release. ndt systems unveils its latest product, the world-class bondhub bond testing technology with c-scan imaging.
ultrasonic testing of carbon carbon composite materials. if a carbon composite is subjected to an ultrasonic source, low frequency waves penetrate to a greater depth than a higher frequency source and are more sensitive to defects, but cannot be heard above 20 khz. a compromise for frequency has to be selected between penetration and sensitivity.
nondestructive testing standards. astm's nondestructive testing standards provide guides for the appropriate methods and techniques used to detect and evaluate flaws in materials and objects without destroying the specimen at hand. such tests include radiographic, ultrasonic, electromagnetic eddy-current , x-ray, acoustic,
the ds test block is a calibration standard used to check the horizontal linearity and the db accuracy per requirements of aws and aashto. distance/area-amplitude blocks distance/area amplitude correction blocks typically are purchased as a ten-block set, as shown above.
the ultrasonic tester graphs a peak of energy whenever the transducer receives a reflected wave. as you recall, sound is reflected any time a wave changes mediums. thus, there will be a peak anytime the waves change mediums. right when the initial pulse of energy is sent from the tester,
a set of test composite resin specimens were prepared. all specimens had constant dimensions 50*45*4 mm3 , and constant single edge notch sen 3 mm figure 2 . sen were made by thin tip cutter of thickness 1 mm, and they are at the specimens' center. 2. ultrasonic testing method by using pulse echo technique, composite resin specimens
15.6. ultrasonic non-destructive testing ndt instruments for aerospace composites. the ultrasonic instruments used for the ndi of aerospace composites range from small portable manual ultrasonic flaw detectors to large fully automated factory scanning systems.
phased array ultrasonic testing phased array ultrasonics is an advanced method of ultrasonic testing that has applications in medical imaging and industrial non-destructive testing. common applications are to non-invasively examine the heart of to find flaws in manufactured materials such as welds.
ultrasonic flaw detection is not limited to metals. as the use of fiberglass and composites in manufacturing has increased in recent years, so has the need to inspect these materials for structural flaws such as delaminations and impact damage. both problems can usually be identified through ultrasonic testing.
the 35rdc is a simple go/no-go ultrasonic gage designed to detect subsurface defects caused by impact damage on aircraft composite structures. features a backlit lcd that displays the word good if no subsurface damage is found or the word bad when it detects subsurface damage.
ultrasonic testing of fiberglass and carbon fiber composites ultrasonic testing provides a ready and well-established technique for locating and documenting internal flaws. measuring the hull thickness of a fiberglass boat using a handheld ultrasonic thickness gage is shown here.
astm's nondestructive testing standards provide guides for the appropriate methods and techniques used to detect and evaluate flaws in materials and objects without destroying the specimen at hand. such tests include radiographic, ultrasonic, electromagnetic eddy-current , x-ray, acoustic, and tomographic techniques.
multiple bondlines, composites with porosity and sandwich structures. ultrasonic bond testing runs at a lower frequency with a range of operational modes, 2 of which are dry-coupled, that are customized for different material combinations,
the ultrasonic testing instrument shall provide linear vertical presentation within ±5% according to asme sec.v, article 5 t-532 of the full screen height for 20% to 80% of the calibrated screen height.
we offer ut calibration blocks of all standard designs and can supply 'specials' made to your requirements. api calibration block - ultrasonic flaw detection calibration blocks. other ut calibration blocks - ultrasonic flaw detection calibration blocks. sizing blocks. aircraft calibration standards - ultrasonic flaw detection calibration
multimode ultrasonic adhesive bond testing instruments featuring pitch-catch, mechanical impedance analysis mia , and resonance testing modes have long been used to inspect the composite material of aircraft.
ultrasonic technique is principally able to indicate internal defects. composites are non-homogeneous and non-isotropic materials with an extremely high sound damping. through-transmission techniques with separate receiver and transmitter transducers on opposite sides of the component, is often used for their testing. this method is much easier
the most commonly applied ndt method for composite elements is ultrasonic testing ut 5 , 6 . the reason for such applicability of ut is its high sensitivity to various damage types commonly found in composites 1 . using this method, it is possible to determine a geometry of internal damage, its surface area and depth location.
the ultrasonic technique is principally able to indicate internal defects. composites are inhomogeneous and anisotropic materials with an extremely high sound attenuation.through transmission techniques with separate receiver and transmitter transducers on opposite sides of the component is often used for their testing.
tap testing is one of the most misunderstood methods in testing of composites. many people in the test industry believe this method is all that is need for the inspection of composites. although tap testing is a viable method for the inspection of composite materials,
ultrasonic pulse velocity upv and mechanical strength testing techniques were then used to measure the porous properties of the manufactured natural polymer-soil composites, which were formed into earth blocks.
ph tool reference standards is a leading supplier of high-quality reference standards and test blocks to non-destructive test ndt professionals worldwide, in any industry.