The Leaching Behaviour of the Swedish KBS-Glasses ABS 39 and ABS 41

1981 ◽  
Vol 6 ◽  
Author(s):  
Hans-Peter Hermansson ◽  
Hilbert Christensen ◽  
Lars Werme ◽  
Kaija Ollila ◽  
Rune Lundqwist
Keyword(s):  
Test Procedure ◽  
Short Description ◽  
Corrosion Products ◽  
In Situ Tests ◽  
Glass Corrosion ◽  
Simulated Waste ◽  
Leaching Behaviour ◽  
Corrosion Investigation

ABSTRACTThe planned Swedish KBS glass corrosion investigation program comprises experiments with inactive glasses containing simulated waste, prolonged in-situ tests, the characterization of corrosion products, immiscibility studies, and corrosion experiments with “hot” glass.This presentation gives a short description of the entire program. It focuses thereafter on some recent leaching results with the inactive KBS glass qualities ABS 39 and ABS 41, which were leached in a manner similar to the PNL MCC–1 test procedure.

scholarly journals Experimental Evaluation of Shear Behavior of Stone Masonry Wall

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2313
Author(s):  
Maria Luisa Beconcini ◽  
Pietro Croce ◽  
Paolo Formichi ◽  
Filippo Landi ◽  
Benedetta Puccini
Keyword(s):  
Shear Behavior ◽  
Stone Masonry ◽  
Masonry Walls ◽  
Mechanical Parameters ◽  
In Situ Tests ◽  
Capacity Curves ◽  
Historical Structures ◽  
Definition Of

The evaluation of the shear behavior of masonry walls is a first fundamental step for the assessment of existing masonry structures in seismic zones. However, due to the complexity of modelling experimental behavior and the wide variety of masonry types characterizing historical structures, the definition of masonry’s mechanical behavior is still a critical issue. Since the possibility to perform in situ tests is very limited and often conflicting with the needs of preservation, the characterization of shear masonry behavior is generally based on reference values of mechanical properties provided in modern structural codes for recurrent masonry categories. In the paper, a combined test procedure for the experimental characterization of masonry mechanical parameters and the assessment of the shear behavior of masonry walls is presented together with the experimental results obtained on three stone masonry walls. The procedure consists of a combination of three different in situ tests to be performed on the investigated wall. First, a single flat jack test is executed to derive the normal compressive stress acting on the wall. Then a double flat jack test is carried out to estimate the elastic modulus. Finally, the proposed shear test is performed to derive the capacity curve and to estimate the shear modulus and the shear strength. The first results obtained in the experimental campaign carried out by the authors confirm the capability of the proposed methodology to assess the masonry mechanical parameters, reducing the uncertainty affecting the definition of capacity curves of walls and consequently the evaluation of seismic vulnerability of the investigated buildings.

scholarly journals Characterization of Wearable and Implanted Antennas: Test Procedure and Range Design

2021 ◽  
Author(s):  
Lukas Berkelmann ◽  
Dirk Manteuffel
Keyword(s):  
Test Procedure ◽  
Wireless Body Area Network ◽  
Path Loss ◽  
Area Network ◽  
Test Range ◽  
General Ability ◽  
Test Zone ◽  
Path Loss Measurements

A method for measuring de-embedded antenna parameters of wearable and implanted antennas for on-body communications is presented. It consists of a tapered flat phantom in order to characterize an antenna’s general ability to excite surface waves travelling along the boundary between body tissue and free space expressed by an angular on-body antenna gain. The design offers a test zone large enough for most typical Wireless Body Area Network devices up to smartphone-size while minimizing the required amount of tissue-simulating material. The designed antenna test range is validated in the 2.4 GHz ISM-band. In order to showcase the applicability to a realistic application, different designs of antennas integrated into an implanted pacemaker are characterized by their on-body gain patterns. A comparison of their performance in in-situ path-loss measurements reveals a clear relation to the on-body gain patterns and indicates that this parameter is a suitable measure for enabling educated antenna design for on-body applications.<br>

In situ characterization of foam morphology during melting of simulated waste glass using x-ray computed tomography

2020 ◽  
Vol 46 (11) ◽  
pp. 17176-17185 ◽  
Author(s):  
Steven A. Luksic ◽  
Richard Pokorny ◽  
Jaime George ◽  
Pavel Hrma ◽  
Tamas Varga ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Waste Glass ◽  
In Situ Characterization ◽  
X Ray ◽  
Foam Morphology ◽  
Simulated Waste ◽  
X Ray Computed

scholarly journals Characterization of Wearable and Implanted Antennas: Test Procedure and Range Design

2021 ◽  
Author(s):  
Lukas Berkelmann ◽  
Dirk Manteuffel
Keyword(s):  
Test Procedure ◽  
Wireless Body Area Network ◽  
Path Loss ◽  
Area Network ◽  
Test Range ◽  
General Ability ◽  
Test Zone ◽  
Path Loss Measurements

A method for measuring de-embedded antenna parameters of wearable and implanted antennas for on-body communications is presented. It consists of a tapered flat phantom in order to characterize an antenna’s general ability to excite surface waves travelling along the boundary between body tissue and free space expressed by an angular on-body antenna gain. The design offers a test zone large enough for most typical Wireless Body Area Network devices up to smartphone-size while minimizing the required amount of tissue-simulating material. The designed antenna test range is validated in the 2.4 GHz ISM-band. In order to showcase the applicability to a realistic application, different designs of antennas integrated into an implanted pacemaker are characterized by their on-body gain patterns. A comparison of their performance in in-situ path-loss measurements reveals a clear relation to the on-body gain patterns and indicates that this parameter is a suitable measure for enabling educated antenna design for on-body applications.<br>

scholarly journals In-Situ Synchrotron X-ray Characterization of Corrosion Products in Zr Artificial Pits in Simulated Physiological Solutions

2017 ◽  
Vol 164 (14) ◽  
pp. C1003-C1012 ◽  
Author(s):  
Yue Zhang ◽  
Owen Addison ◽  
Petre Flaviu Gostin ◽  
Alexander Morrell ◽  
Angus J. M. C. Cook ◽  
...  
Keyword(s):  
Corrosion Products ◽  
X Ray

In-Situ Mechanical Characterization of a Freestanding 100 Nanometer Thick Aluminum Film in SEM Using MEMS Sensors

2001 ◽  
Vol 695 ◽  
Author(s):  
Aman Haque ◽  
Taher Saif
Keyword(s):  
Mechanical Characterization ◽  
Uniaxial Stress ◽  
Aluminum Film ◽  
Strain Response ◽  
In Situ Tests ◽  
Dislocation Mechanism ◽  
Size Scale ◽  
Displacement Sensors

ABSTRACTWe present the uniaxial stress-strain response of a freestanding 100 nanometer thick 99.99% pure sputtered Aluminum film with grain size about 60 nanometers, tested in-situ inside a SEM chamber. The specimen is cofabricated with MEMS force and displacement sensors to minimize the experimental setup size, allowing both quantitative and in-situ tests to be performed in SEM and TEM chambers. The experimental results strongly suggest that at this size scale, a) Elastic modulus remains same as the bulk Aluminum, b) Yielding starts at about 625 MPa, and c) Strain hardening effect is absent, which indirectly suggests the deformation at this size scale is not dislocation mechanism based.

scholarly journals Characterization of Wearable and Implanted Antennas: Test Procedure and Range Design

2021 ◽  
Author(s):  
Lukas Berkelmann ◽  
Dirk Manteuffel
Keyword(s):  
Test Procedure ◽  
Wireless Body Area Network ◽  
Path Loss ◽  
Area Network ◽  
Test Range ◽  
General Ability ◽  
Test Zone ◽  
Path Loss Measurements

A method for measuring de-embedded antenna parameters of wearable and implanted antennas for on-body communications is presented. It consists of a tapered flat phantom in order to characterize an antenna’s general ability to excite surface waves travelling along the boundary between body tissue and free space expressed by an angular on-body antenna gain. The design offers a test zone large enough for most typical Wireless Body Area Network devices up to smartphone-size while minimizing the required amount of tissue-simulating material. The designed antenna test range is validated in the 2.4 GHz ISM-band. In order to showcase the applicability to a realistic application, different designs of antennas integrated into an implanted pacemaker are characterized by their on-body gain patterns. A comparison of their performance in in-situ path-loss measurements reveals a clear relation to the on-body gain patterns and indicates that this parameter is a suitable measure for enabling educated antenna design for on-body applications.<br>

scholarly journals Characterization of avalanche loading on impacted structures: a new approach based on inverse analysis

2008 ◽  
Vol 54 (185) ◽  
pp. 324-332 ◽  
Author(s):  
Philippe Berthet-Rambaud ◽  
Ali Limam ◽  
Djebar Baroudi ◽  
Emmanuel Thibert ◽  
Jean-Michel Taillandier
Keyword(s):  
Inverse Analysis ◽  
Inverse Method ◽  
Experimental Site ◽  
In Situ Tests ◽  
Distribution Models ◽  
New Approach ◽  
Ultimate Objective ◽  
Original Approach

AbstractExperiments have been conducted on the French full-scale experimental site at Lautaret pass to improve our understanding of the action of snow avalanches on obstacles. The ultimate objective is to provide realistic pressure distribution models suitable for use in civil engineering design and to eliminate the restrictive assumptions currently used in this field. We focus on the feasibility of using the inverse method to quantify the action of the avalanche from its effects on realistic structures rather than from sensors placed directly in the flow. This approach takes into account the interactions between the flow and the obstacle and ensures that the result is effectively the action experienced by the obstacle. The inverse analysis procedure is developed and validated using both numerical and laboratory tests. In situ tests carried out at the Lautaret site to determine the avalanche action at different scales confirm the reliability of this original approach. Its intrinsic characteristics make it especially suitable for application to different structures to provide new knowledge in this complex field.

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