Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Terence P. Lerch"'
Autor:
Terence P. Lerch
Publikováno v:
Ultrasonics. 113
A new thickness measurement technique is described in which air-coupled ultrasound is used to interrogate nonporous membranes at relatively long wavelengths. The thru-transmission technique compares a reference signal taken with the membrane absent t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::583b7c9103ca340150f429fd0938af9a
https://pubmed.ncbi.nlm.nih.gov/33548759
https://pubmed.ncbi.nlm.nih.gov/33548759
Autor:
Terence P. Lerch
Publikováno v:
Applied Acoustics. 101:39-46
A new noncontact technique for determining the surface density or mass per unit area of nonporous, homogeneous membranes and foils of sub-wavelength thicknesses is introduced. Surface densities are determined through application of the limp-wall mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a37f90399d0a3618369c6a8fb37913c
https://doi.org/10.1016/j.apacoust.2015.08.001
https://doi.org/10.1016/j.apacoust.2015.08.001
Autor:
Terence P. Lerch
A new and computationally efficient method is developed for characterizing a spherically focused, ultrasonic transducer (and its accompanying test system). Procedures for determining the probe's effective radius, effective focal length, and system ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e475a4c716a49187a326798eb03bf46
https://doi.org/10.31274/rtd-180813-10254
https://doi.org/10.31274/rtd-180813-10254
Publikováno v:
The International Journal of Advanced Manufacturing Technology. 41:948-959
The objective of this study is to propose a method for reverse engineering prismatic and free-form shapes. The primary focus is on feature-based parameterization of digitized geometries so that they can be further used in downstream MCAD (mechanical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3e3efc47d87d4af1a1fe715747cc01e
https://doi.org/10.1007/s00170-008-1550-1
https://doi.org/10.1007/s00170-008-1550-1
Publikováno v:
Ultrasonics. 44:83-92
The ultrasonic attenuation coefficient of a fluid or solid is an acoustic parameter routinely estimated for the purpose of materials characterization and defect/disease detection. This paper describes a broadband attenuation coefficient estimation te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc8902efef8d965a69f5cba3a43b713d
https://doi.org/10.1016/j.ultras.2005.07.003
https://doi.org/10.1016/j.ultras.2005.07.003
Publikováno v:
Research in Nondestructive Evaluation. 11:137-163
Three types of transducer beam models are developed for obtaining the bulk waves generated by a plane piston transducer radiating through a planar fluid—solid interface. The first type, called the surface integral model, is based on a Rayleigh—So
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e27b96bc7a18e338d01301d0bf2d1c4e
https://doi.org/10.1007/pl00003918
https://doi.org/10.1007/pl00003918
Publikováno v:
The Journal of the Acoustical Society of America. 104:1256-1265
A new method, the edge element method, has been developed to numerically evaluate a variety of ultrasonic transducer beam models. The edge element technique divides the transducer surface into a web of sources consisting of radiating straight line el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46b529f4b7753d1c8e57800eaa3b26f6
https://doi.org/10.1121/1.424334
https://doi.org/10.1121/1.424334
Publikováno v:
The Journal of the Acoustical Society of America. 101:1269-1277
A model of a spherically focused piston transducer is developed in terms of boundary diffraction waves. The model represents the radiated pressure in terms of a direct wave and a one-dimensional edge wave integral. This decomposition allows the effic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::161bd234979ed171628a01c13b70896e
https://doi.org/10.1121/1.418100
https://doi.org/10.1121/1.418100
Autor:
Terence P Lerch, Roschelle Adelle Heuberger, Tanya Domina, Maureen Macgillivray, Holly Laurene Klamer
Publikováno v:
The FASEB Journal. 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d40db96844817139c85d0f202584232
https://doi.org/10.1096/fasebj.20.4.a182
https://doi.org/10.1096/fasebj.20.4.a182
Publikováno v:
Handbook of Elastic Properties of Solids, Liquids, and Gases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1a90af8fc24e1b7d79ce27d6100acd1
https://doi.org/10.1016/b978-012445760-7/50004-6
https://doi.org/10.1016/b978-012445760-7/50004-6