Search Results - "Blessing, G."

Instrumented indentation and ultrasonic velocity techniques for the evaluation of creep cavitation in silicon nitride by LOFAJ, F, SMITH, D. T, BLESSING, G. V, LUECKE, W. E, WIEDERHORN, S. M

“…Instrumented indentation and ultrasonic wave velocity techniques combined with precise density change measurements and transmission electron microscopy (TEM)…”
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The design, construction and application of a large aperture lens-less line-focus PVDF transducer by Xiang, D., Hsu, N.N., Blessing, G.V.

“…A large aperture lens-less line-focus transducer for materials characterization is described. The transducer design is based on a time-domain Green's function…”
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Acoustic emission monitoring of high speed grinding of silicon nitride by Hwang, T.W., Whitenton, E.P., Hsu, N.N., Blessing, G.V., Evans, C.J.

“…Acoustic emission (AE) monitoring of a machining process offers real-time sensory input which could provide tool condition and part quality information that is…”
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Imaging of acoustic surface wave slowness by Xiang, D., Hsu, N. N., Blessing, G. V.

“…An experimental method has been devised for imaging the acoustic surface wave slowness (inverse of the phase velocity) in anisotropic solids. This technique…”
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Excitation functions of 85Rb(p,xn)85m,g,83,82,81Sr reactions up to 100MeV: integral tests of cross section data, comparison of production routes of 83Sr and thick target yield of 82Sr by Kastleiner, S, Qaim, S.M, Nortier, F.M, Blessing, G, van der Walt, T.N, Coenen, H.H

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Improved target system for production of high purity [ 18F]fluorine via the 18O(p,n) 18F reaction by Hess, E., Blessing, G., Coenen, H.H., Qaim, S.M.

“…An improved aluminium target system for production of elemental fluorine via the 18O(p,n) 18F reaction using a two-step irradiation protocol is described. In…”
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Statistical error analysis of time and polarization resolved ultrasonic measurements by Xiang, D., Hsu, N.N., Blessing, G.V.

“…The time and polarization resolved ultrasonic technique which we previously developed has been demonstrated to simultaneously provide measurements of the wave…”
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Ultrasonic Velocity Technique for Nondestructive Quantification of Elastic Moduli Degradation during Creep in Silicon Nitride by Lofaj, František, Blessing, Gerald V., Wiederhorn, Sheldon M.

“…The ultrasonic velocity technique was used for nondestructive quantification of creep damage during interrupted tensile creep tests at 1400°C in an advanced…”
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Ultrasonics research in the NIST Manufacturing Engineering Laboratory by Blessing, G.V., Hsu, N.N., Slotwinski, J.A., Xiang, D.

“…The Ultrasonic Standards Group in the Manufacturing Engineering Laboratory of the National Institute of Standards and Technology (NIST) performs research,…”
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Internal irradiation system for excitation function measurement via the stacked-foil technique by Blessing, G., Bräutigam, W., Böge, H.G., Gad, N., Scholten, B., Qaim, S.M.

“…An internal irradiation system has been developed at the injector cyclotron of COSY which allows the use of the conventional stacked-foil technique for…”
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Production of 55Co and 57Co via proton induced reactions on highly enriched 58Ni by Spellerberg, S., Reimer, P., Blessing, G., Coenen, H.H., Qaim, S.M.

“…55Co and 57Co were produced via (p, α) and (p, 2p) reactions, respectively, on highly enriched 58Ni. Thin deposits of 58Ni on Cu backing, obtained…”
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Detection of contact damage in ceramics by an ultrasonic method by Ahn, Hyo Sok, Jahanmir, Said, Slotwinski, John A., Blessing, Gerald V.

“…A pulse-echo ultrasonic technique consisting of focused normal-incident compressional waves was used for the detection and evaluation of surface and subsurface…”
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Ultrasonic-shear-wave measurement of known residual stress in aluminum by Blessing, G V, Hsu, N N, Proctor, T M

“…Ultrasonic-shear-wave time-of-flight measurements were made at a nominal frequency of 4 MHz on both stressed and nonstressed sample disks of 2024 Al alloy. The…”
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Ultrasonic Measurement of Sheet Anisotrophy and Formability by Clark, A. V., Thompson, R. B., Reno, R. C., Blessing, G. V., Matlock, D.

“…The anisotropy of Young's modulus in steel sheet is closely related to the r-value. Commercially available instrumentation is often used to predict formability…”
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Some optimisation studies relevant to the production of high-purity [formula omitted] and [formula omitted] at a small-sized cyclotron by Qaim, S.M, Hohn, A, Bastian, Th, El-Azoney, K.M, Blessing, G, Spellerberg, S, Scholten, B, Coenen, H.H

“…Optimisation experiments on the production of the positron emitting radionuclides 124 I (T 1/2=4.18 d) and 120 g I (T 1/2=1.35 h) were carried out. The TeO…”
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Some optimisation studies relevant to the production of high-purity 124I and 120gI at a small-sized cyclotron by Qaim, S M, Hohn, A, Bastian, Th, El-Azoney, K M, Blessing, G, Spellerberg, S, Scholten, B, Coenen, H H

“…Optimisation experiments on the production of the positron emitting radionuclides 124I(T(1/2) = 4.18d) and (120g)I (T(1/2) = 1.35 h) were carried out. The…”
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Excitation functions of 85Rb(p, xn) 85m,g,83,82,81Sr reactions up to 100 MeV: integral tests of cross section data, comparison of production routes of 83Sr and thick target yield of 82Sr by Kastleiner, S, Qaim, S.M, Nortier, F.M, Blessing, G, van der Walt, T.N, Coenen, H.H

“…The β + emitter 83Sr ( T 1/2=32.4 h, E β + =1.23 MeV, I β + =24%) is a potentially useful radionuclide for therapy planning prior to the use of the β − emitter…”
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Time-resolved ultrasonic body wave measurements of material anisotropy using a lensless line-focus transducer by Hsu, N.N., Xiang, D., Blessing, G.V.

“…For plate-like sample geometries, a line-focus transducer can be used to detect back-reflected echoes through the thickness of the sample. The interaction of…”
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Excitation functions of 85Rb(p,xn)(85m,g,83,82,81)Sr reactions up to 100 MeV: integral tests of cross section data, comparison of production routes of 83Sr and thick target yield of 82Sr by Kastleiner, S, Qaim, S M, Nortier, F M, Blessing, G, van der Walt, T N, Coenen, H H

“…The beta+ emitter 83Sr (T(1/2) = 32.4 h, Ebeta+ = 1.23 MeV, Ibeta+ = 24%) is a potentially useful radionuclide for therapy planning prior to the use of the…”
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Production of 82mRb via the 82Kr(p,n)-process on highly enriched 82Kr: a remotely controlled compact system for irradiation, safe handling and recovery of the target gas and isolation of the radioactive product by Blessing, G., Tárkányi, F., Qaim, S.M.

“…A remotely controlled compact system for the production of 6.5 h 82mRb, a potential substitute for generator-produced 1.3 min 82Rb in myocardial blood flow…”
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