Search Results - "BILLSON, D. R"

Structural health monitoring using polymer-based capacitive micromachined ultrasonic transducers (CMUTs) by Hutchins, D.A., Billson, D.R., Bradley, R.J., Ho, K.S.

“…► Use of polymers for CMUTs. ► Properties when attached to a solid. ► Lamb wave identification. ► Detection of simulated acoustic emission. ► Vibration…”
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The use of broadband acoustic transducers and pulse-compression techniques for air-coupled ultrasonic imaging by Gan, T.H., Hutchins, D.A., Billson, D.R., Schindel, D.W.

“…A pulse-compression technique has been applied to air-coupled testing of solid materials. Capacitance transducers were used to generate wide bandwidth…”
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Acoustic field visualisation using local absorption of ultrasound and thermochromic liquid crystals by Trushkevych, O., Turvey, M., Billson, D.R., Watson, R., Hutchins, D.A., Edwards, R.S.

“…•A passive sensor for ultrasound based on thermochromic liquid crystals (TLCs) is introduced.•Its use for characterising ultrasound sensors and for visualising…”
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The investigation of guided wave propagation around a pipe bend using an analytical modeling approach by Sanderson, R M, Hutchins, D A, Billson, D R, Mudge, P J

“…Guided wave inspection has the advantage of providing full volumetric coverage of tens of meters of pipe from a single test location. However, guided wave…”
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Ultrasonic Lamb wave tomography using scanned EMATs and wavelet processing by Ho, K. S., Billson, D. R., Hutchins, D. A.

“…A continuous wavelet transform has been used to analyse multi-mode Lamb wave propagation. This was applied to experimental data from non-contact…”
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Fabrication and analysis of cylindrical resin AFM microcantilevers by Cheneler, D., Bowen, J., Leigh, S.J., Purssell, C.P., Billson, D.R., Hutchins, D.A., Ward, M.C.L.

“…In this paper a new method of fabricating cylindrical resin microcantilevers using the Direct Digital Manufacturing (DDM) technique of Micro-stereolithography…”
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Rapid manufacture of monolithic micro-actuated forceps inspired by echinoderm pedicellariae by Leigh, S J, Bowen, J, Purssell, C P, Covington, J A, Billson, D R, Hutchins, D A

“…The concept of biomimetics and bioinspiration has been used to enhance the function of materials and devices in fields ranging from healthcare to renewable…”
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Acoustic fields of nonplanar radiators by Medley, A. P., Billson, D. R., Hutchins, D. A., Neild, A.

“…A theoretical approach is described which predicts the fields of acoustic radiators with a predefined surface topography. This is achieved by dividing the…”
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Micro-stereolithography as a transducer design method by Ho, K.S., Bradley, R.J., Billson, D.R., Hutchins, D.A.

“…This paper investigates the use of micro-stereolithography, a rapid prototyping technique, in the manufacture of transducers. It is illustrated for the…”
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Preliminary studies of a novel air-coupled ultrasonic inspection system for food containers by Gan, T.H, Hutchins, D.A, Billson, D.R

“…Air-coupled ultrasound has been used to perform measurements on liquids and starch-based materials, within containers similar to those used in the food…”
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Imaging using air-coupled polymer-membrane capacitive ultrasonic arrays by Neild, A., Hutchins, D.A., Billson, D.R.

“…Polymer-membrane capacitive ultrasonic linear and 2-D arrays have been fabricated for use in air-coupled imaging. By using arrays as receivers, there is a…”
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Mid Infrared Tomography of Polymer Pipes by Hutchins, D. A., Huthwaite, P., Davis, L. A. J., Billson, D. R., Senni, L., Laureti, S., Ricci, M.

“…Mid-infrared signals in the 2–5 μm wavelength range have been transmitted through samples of polymer pipes, as commonly used in the water supply industry. It…”
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A miniature flow sensor fabricated by micro-stereolithography employing a magnetite/acrylic nanocomposite resin by Leigh, S.J., Purssell, C.P., Bowen, J., Hutchins, D.A., Covington, J.A., Billson, D.R.

“…Micro-stereolithography (MSL) is an important technique for fabrication of three-dimensional (3D) structures and micro-devices. With the recent developments to…”
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The radiated fields of focussing air-coupled ultrasonic phased arrays by Neild, A., Hutchins, D.A., Robertson, T.J., Davis, L.A.J., Billson, D.R.

“…This paper presents an investigation into the fields radiated into air by ultrasonic phased arrays under transient excitation. In particular, it includes a…”
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The characterization of capacitive micromachined ultrasonic transducers in air by McIntosh, J.S., Hutchins, D.A., Billson, D.R., Robertson, T.J., Noble, R.A., Jones, A.D.R.

“…Surface micromachined, capacitive ultrasonic transducers have been fabricated using a low thermal budget, CMOS-compatible process. They exhibit interesting…”
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A conical air-coupled capacitance transducer for surface imaging by Hutchins, D.A, Robertson, T.J, Billson, D.R, Solanki, P

“…This paper describes the construction and operation of an air-coupled capacitance transducer with a conical backplate. This was designed to produce a focal…”
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Gas jet as a waveguide for air-coupled ultrasound by Choi, D.W., McIntyre, C., Hutchins, D.A., Billson, D.R.

“…The directional characteristics of an ultrasonic signal have been studied during propagation within an axial gas jet. The effects of nozzle shape, nozzle…”
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Modelling of the radiated field from multi-element capacitive micromachined ultrasonic transducers by McIntosh, J.S, Neild, A, Hutchins, D.A, Billson, D.R, Noble, R.A, Davies, R.R

“…This paper presents results from a theoretical model of the ultrasonic fields radiated by a 3 × 3 assembly of capacitive micromachined ultrasonic transducer…”
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Gas jets as ultrasonic waveguides by Choi, D W, Hutchins, D A, Billson, D R

“…The study of the propagation of ultrasound within a gas jet is extended to obtain waveguide effects, where the jet collimates the ultrasonic beam from a…”
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Inspection of drinks cans using non-contact electromagnetic acoustic transducers by Ho, K.S., Billson, D.R., Hutchins, D.A.

“…Electromagnetic acoustic transducers (EMATs) have been used to transmit ultrasonic signals across liquid-filled aluminium beverage containers. The work has…”
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