Results 21 to 30 of about 934,305 (288)
Ultrasonic imaging of electrofusion welded polythene pipes employed in utilities industry [PDF]
, 2012 Electrofusion welding (EFW) is a widely used technique for joining polyethylene pipes in the oil, gas and water industry. Like many welding and joining methods, the joints created by EFW can exhibit a range of flaw types that can be attributed to process
Gachagan, Anthony +2 more
core +4 more sources
The Acoustic Field Distribution Inside the Ultrasonic Ring Array
Archives of Acoustics, 2018 This paper presents and analyses the results of a simulation of the acoustic field distribution in sectors of a 1024-element ring array, intended for the diagnosis of female breast tissue with the use of ultrasonic tomography.
Wiktor STASZEWSKI +2 more
doaj +1 more source
Applied Sciences, 2022 Non-destructive testing of the cracks on the in-service bolt’s shank with size M18 is a challenging technical problem. Due to the weak echo energy of cracks with large buried depths, the conventional phased array ultrasonic sector scan imaging has a low ...
Jingxing Huang +5 more
doaj +1 more source
Prototyping Airborne Ultrasonic Arrays
, 2022 Focused ultrasound is the base mechanism for mid-air tactile feedback generation, acoustic levitation, wireless power transfer, directional audio and other emerging applications. The basic required set-up is an ultrasonic emitter with the capability of focusing its acoustic power at a target point. Ideally, a multi-emitter phased array is used since it
openaire +2 more sources
A noncontact ultrasonic platform for structural inspection [PDF]
, 2011 Miniature robotic vehicles are receiving increasing attention for use in nondestructive testing (NDE) due to their attractiveness in terms of cost, safety, and their accessibility to areas where manual inspection is not practical. Conventional ultrasonic
Summan, Rahul +4 more
core +4 more sources
Energies, 2019 Previous studies have indicated that a basic frost layer negatively affects the heat-transfer efficiency and is difficult to remove using a single ultrasonic transducer.
Haihui Tan +4 more
doaj +1 more source
Spot weld analysis with 2D ultrasonic Arrays [PDF]
Journal of Research of the National Institute of Standards and Technology, 2004 This paper describes a threefold method of testing the performance of an array-based ultrasonic tool for nondestructive testing of spot welds. The tool is described in its capabilities, use, and advantages over existing counterparts. Performance testing for and the results from carrying out the testing are described.
Denisov, A. A. +4 more
openaire +2 more sources
Phased array ultrasonic testing of micro-flaws in additive manufactured titanium block
Materials Research Express, 2020 While titanium components manufactured by additive manufacturing have been widely used in direct molding of complex components, their performance is strongly affected by existing internal flaws generated in the unique manufacturing process.
Xiaohui Wang +6 more
doaj +1 more source
Design and micromachining of a stretchable two-dimensional ultrasonic array
Micro and Nano Engineering, 2021 Focused ultrasound using stretchable ultrasonic arrays is a very attractive method for ultrasound neuromodulation. However, the structure and fabrication of the arrays have brought great challenges for the development of stretchable ultrasonic arrays. In
Wei Liu +3 more
doaj +1 more source
A phased array-based method for damage detection and localization in thin plates [PDF]
, 2009 A method for damage localization based on the phased array idea has been developed. Four arrays oftransducers are used to perform a beam-forming procedure.
Wandowski, T. +3 more
core +4 more sources