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Experimental Investigation of the Physical Properties and Microstructure of Slate under Wetting and Drying Cycles Using Micro-CT and Ultrasonic Wave Velocity Tests

Junwei Ma, Xiaoxu Niu, Chengren Xiong, Sha Lu, Ding Xia, Bocheng Zhang, Huiming Tang
2020 Sensors  
In the present study, a fully nondestructive and noninvasive testing approach utilizing micro-CT and ultrasonic wave velocity tests was employed to investigate the microstructure of slate under wetting  ...  The nondestructive and noninvasive testing approach utilizing micro-CT and ultrasonic wave velocity tests has potential for the detection and visualization of the internal microstructure of rock under  ...  All funding and grant support received is gratefully acknowledged. Conflicts of Interest: The authors declare that there are no conflicts of interest.  ... 
doi:10.3390/s20174853 pmid:32867248 pmcid:PMC7506867 fatcat:tk4uocgjavge3bkk35ef3mmi3e

Damage Characteristics of Sandstone Subjected to Coupled Effect of Freezing-Thawing Cycles and Acid Environment

Hongwei Deng, Songtao Yu, Junren Deng
2018 Advances in Civil Engineering  
In the meantime, chemical component of the solution is also tested and recorded in the progress of freezing-thawing cycling.  ...  Acid erosion and F-T cycling lead to the generation of new micropores and expansion of micropores at the beginning; when the acid solution is exhausted, new micropores generate under the effect of freezing-thawing  ...  Acknowledgments e support from National Natural Science Foundation of China (Grant nos. 51774323 and 41502327) and the Fundamental Research Funds for the Central Universities of Central South University  ... 
doi:10.1155/2018/3560780 fatcat:ncdvof4nejhhlnp6e3pvp4fzaq

Experimental characterization of the self-healing capacity of cement based materials and its effects on the material performance: A state of the art report by COST Action SARCOS WG2

Liberato Ferrara, Tim Van Mullem, Maria Cruz Alonso, Paola Antonaci, Ruben Paul Borg, Estefania Cuenca, Anthony Jefferson, Pui-Lam Ng, Alva Peled, Marta Roig-Flores, Mercedes Sanchez, Christof Schroefl (+4 others)
2018 Construction and Building Materials  
The review will also address the correlation, which can be established between crack closure and the recovery of physical/mechanical properties, as measured by means of the different reviewed tests.  ...  As a matter of fact this state of the art provides a comprehensive and critical review of the experimental methods and techniques, which have been employed to characterize and quantify the self-sealing  ...  region of the specimen, wet/dry cycles, freeze/thaw cycles and winter/summer 8 cycles.  ... 
doi:10.1016/j.conbuildmat.2018.01.143 fatcat:ekcvwsirb5dr7gxrr7hfqk2jnm

Experimental study on capillary water absorption of sandstones from different grotto heritage sites in China

Yue Zhang, Yunmeng Zhang, Jizhong Huang
2022 Heritage Science  
Infrared thermography provides an efficient and nondestructive way to detect the transition zone between wet and dry portions of the sample, which was not visible to the naked eyes.  ...  Differences in macroscopic properties were contributed to microstructural features such as average pore diameter and pore size distribution.  ...  Acknowledgements The authors sincerely appreciate Yungang Academy, Academy of Dazu Rock Carvings and Grottoes Research Center of Management Committee of Leshan Grand Buddha Scenic Spot for providing help  ... 
doi:10.1186/s40494-022-00656-y fatcat:k4nftixphjdcpfnghwtddbsqgm

Danish activities concerning noise in the environment

Fritz Ingerslev
1982 Journal of the Acoustical Society of America  
detection, with current interest primarily directed at ultrasonic wave velocity measurements.  ...  Re-petition of one cycle gives the unvarying wave form of a stable electronic generator.  ...  Experimental and theoretical work is presented to investigate the interaction of finite ultrasonic beams with liquid-solid interfaces.  ... 
doi:10.1121/1.2019901 fatcat:kk6boa5no5aitorvgbktvdlxou

Theoretical and experimental investigation of the insertion loss of a dissipative muffler

Christian Pommer, Viggo Tarnow
1986 Journal of the Acoustical Society of America  
The presentation will include a description of the dry weight of the TM as a function of cooblear location and an estimate of the dry-to-wet weight ratio. [ Work supported by NSF; We thank Dr. J.  ...  tested experimentally.  ...  The ratio R of the compressional (P) wave velocity to water sound speed, and g, the gradient of P wave velocity, have been measured for an abyssal plains environment by maximizing the similarity between  ... 
doi:10.1121/1.2024087 fatcat:tcee6inawvhubc6ftuk2ffhyce


1947 Journal of The American Ceramic Society  
Ultrasonic waves also cause thermal effects which can be interpreted as an interaction g Co.). between ultrasonic and stationary thermoelectric waves.  ...  The possibility of a slightly greater silicon loss for the limestone heats is indi- cated. (3) The physical properties and microstructures of the irons are not influenced by changing from limestone to  ... 
doi:10.1111/j.1151-2916.1947.tb19646.x fatcat:srnpwczvijghhkvpzdwwf47ydi

Compiled by the American Ceramic Society

1951 Journal of The American Ceramic Society  
Symposium on ultrasonic testing: Ultra- sonic wave propagation in materials, B (5) 964 Gol’denberg, L. G.  ...  Investigation with electron micro- scope of the action of surface-aetive reagents in hydration process of Portland cement, (3) 44/ Stolte, N. H. Use of heat exchangers in the pickle room, (8) 135¢c.  ... 
doi:10.1111/j.1151-2916.1951.tb13013.x fatcat:wsaymzwbcnd3vmsfudivpnxne4


1961 Journal of The American Ceramic Society  
The formation of Cr;Os, CreO;, CrOs, and Cr.O; by the decomposition of anhydrous CrO,; under a high oxygen pressure and their physical and chemical properties are presented.  ...  Microstructures and some mechanical properties are presented. Alloys containing up to 16% (wt.) Al,O; are ductile at all temperatures tested.  ... 
doi:10.1111/j.1151-2916.1961.tb15371.x fatcat:s3pyicwrunfnhod5ufcxriwlk4


1958 Journal of The American Ceramic Society  
The effects of time of healing, conditions of curing, additions of lime and fly ash, and cycles of wetting and drying were investigated.  ...  Glass Technol., 40 [193] 66-96T (1956); “‘II, Absorptions Characteristic of Certain of the Experimental Glasses,’’ itbid., 97-138T; “III, Certain Physical and Chemical Properties of the Experimental Glasses  ... 
doi:10.1111/j.1151-2916.1958.tb13495.x fatcat:3qpjr5ds65gixejhgxi4a5jsy4


1957 Journal of The American Ceramic Society  
Physical an chemical investigations of the burning ar slaking of lime, (1) 2/ Pohlman, R. Flaw detection device using rm flected ultrasonic acoustic waves, P (10) 245; es a E.  ...  V., and Bacon, L. R. Method for testing the interaction of overglaze decorations with detergent solutions, (1) 13/ Ots, I. Apparatus for testing workpieces with ultrasonic waves, P (10) 245d.  ... 
doi:10.1111/j.1151-2916.1957.tb12561.x fatcat:tf3dlguehbdy7nhyoj6qd65ic4


1953 Journal of The American Ceramic Society  
The ultrasonic waves may be of such intensity that the kaolin particles are split. M.Ha.  ...  The bauxite pril ion cts, Ses, eld. ‘us- fol- ing | of ure zht led its.  ... 
doi:10.1111/j.1151-2916.1953.tb12846.x fatcat:5njgcwgoafhb5hgulmcugnib5e

Multifuel Burners [chapter]

2014 Combustion Engineering and Gas Utilisation  
The relationship between wet and dry analysis for natural gas is shown in Figure 1 .2. ., FLAME PROPERTIES AND STRUCTURE An understanding of the flame properties of natural gas is important as a basis  ...  The relationship between wet and dry analysis for natural gas is shown in Figure 1 .2. ., E " "0 > > .c ~ ~ u " "C 0 C. ., " ;:: ;ji FLAME PROPERTIES AND STRUCTURE An understanding of the flame properties  ...  These anemometers are used extensively to analyse the velocity microstructures of turbulent gas or liquid flows.  ... 
doi:10.4324/9781315024714-10 fatcat:w4epumpwrzeqji2u6jpj4xfyqy

Elastic Properties of Sedimentary Rocks

Jaime Melendez-Martinez
In this work, elastic and physical properties of a variety of sedimentary samples that include glacial sediments, carbonates, shales, one evaporite, and one argillite from a variety of locations are investigated  ...  Assuming vertical transverse isotropy, ultrasonic compressional-and shear-waves (at 1 MHz central frequency) were measured as a function of confining pressure on all samples with the exception of glacial  ...  I would also like to express my gratitude to the rest of the members of my defence committee for their fruitful comments when reviewing my thesis.  ... 
doi:10.7939/r33t9df65 fatcat:dnyt37hpp5fk3dpgucmq6w4a7a

Materials for sustainable development

2012 MRS bulletin  
Beam energies from 10 keV up to several 10s of MeV Beam currents from 100 micro-amps up to several milliamps Ion species, including H, He, B, P, As and others Single wafer or batch processing of wafers  ...  up to and including 8" In-air or in-vacuum cassette-to-cassette wafer handling Electrostatic and/or mechanical wafer clamping CUSTOMIZED PRODUCTION ION IMPLANTERS High Voltage Engineering Europa B.V.  ...  Experimental probes that can be used to characterize cement paste at small length scales.  ... 
doi:10.1557/mrs.2012.90 fatcat:3koqcc57xngbtjl2tgbz4govuy
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