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Keywords: measurements
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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2001
ISBN-10: 0-8031-2884-3
ISBN: 978-0-8031-2884-2
... The results of an intercomparison of neutron dosimetry measurements in the exvessel cavity of VVER-1000 type reactor are submitted. Good agreement of measured results of different independent participants was found for the different activation reactions. Evaluated absolute dosimetry data...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1999
ISBN-10: 0-8031-2604-2
ISBN: 978-0-8031-2604-6
.... A total of fourteen tests, each including reinforced concrete, corrugated steel, and corrugated HDPE, were conducted. Eleven of the installations were conducted with 900 mm inside diameter pipe and three with 1500 mm inside diameter pipe. The pipes were buried to a cover depth of 1.2 m. Measurements...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-2009-5
ISBN: 978-0-8031-2009-9
... A review on the available electrochemical methods is presented for the on-site determination of rebar corrosion rate. In real size structures the methods available at present may be classified in three groups: A) Confinement of the applied electrical signal, B) Measurement of the lateral...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1995
ISBN-10: 0-8031-2023-0
ISBN: 978-0-8031-2023-5
... The National Institute of Standards and Technology has conducted a study of ventilation and ventilation measurement techniques in the Bonneville Power Administration (BPA) Building in Portland, Oregon. The project involved the use of the following outdoor air ventilation measurement techniques...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1995
ISBN-10: 0-8031-2017-6
ISBN: 978-0-8031-2017-4
... The reference datum for a screw thread is the pitch diameter cylinder. Although a defined method within the United States for pitch diameter measurement exists, it does not follow worldwide procedures, and the complexity and uncertainties associated with this measurement often go unappreciated...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1994
ISBN-10: 0-8031-1893-7
ISBN: 978-0-8031-1893-5
... and strain distributions were measured under two types of loads. One was the rolling truck tires of the Road Testing Machine, and the other was falling weight deflectometer (FWD) loadings. Distributions of stress and strain are explored and mapped in three-dimensional graphs. Some steps are taken...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1992
ISBN-10: 0-8031-1469-9
ISBN: 978-0-8031-1469-2
... The experimental mechanics of small cracks require high spatial resolution measurements that are only obtained by using the scanning electron microscope. This paper describes how cyclic loading stages developed for the scanning electron microscope have been used successfully to study growing...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1992
ISBN-10: 0-8031-1440-0
ISBN: 978-0-8031-1440-1
... The origins and rationale for the three plane-strain fracture toughnesses defined by the new ASTM Test Method for Plane-Strain (Chevron-Notch) Fracture Toughness of Metallic Materials (E 1304-89) are reviewed. K Iv M represents the toughness measured in a greatly simplified test...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1271-8
ISBN: 978-0-8031-1271-1
... allows measurements in even clean background air. It is presently being commercialized with an integral Luminox detector. (2) A second converter/sequencer for NO x (NO x = NO 2 + NO) and NO 2 is described. It uses CrO 3 for the NO conversion and presents significant advantages over the competitive...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1988
ISBN-10: 0-8031-0983-0
ISBN: 978-0-8031-0983-4
... A large-diameter triaxial cell (φ 300 mm) is presented. Its uniqueness lies in the double measuring system of all parameters: axial strain, volumetric strain, and pore pressures. Owing to this system, accurate measurements can be taken, enabling the determination of the soil constitutive...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1987
ISBN-10: 0-8031-0955-5
ISBN: 978-0-8031-0955-1
... Measurement consists of comparison of samples of unknown composition with standards of known composition or with scales calibrated with respect to such standards. The standards used must simulate the unknowns with respect to matrix and level of analyte if the comparisons are to be valid...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1987
ISBN-10: 0-8031-0947-4
ISBN: 978-0-8031-0947-6
... Measurement of the mechanical and physical properties of metallic and inorganic coatings presents difficulties. The difficulties arise because coatings are often thin, and they are by definition attached to substrates. The expediency of separating the coating from its substrate to measure...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1987
ISBN-10: 0-8031-0947-4
ISBN: 978-0-8031-0947-6
... A measuring method for thin inorganic coatings on metals has been developed, based on the capacitance of the coating, using an electrical conductive rubber probe as the electrode, pressed against the surface and the substrate as the counter electrode. The reciprocal value of the capacitance...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1986
ISBN-10: 0-8031-0469-3
ISBN: 978-0-8031-0469-3
... Air infiltration, an important energy loss mechanism in buildings, has been studied in a number of tight homes in Sweden. Two methods of measurement have been used: the fan pressurization technique was used for measuring the airtightness of the building envelope and the tracer gas technique...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1986
ISBN-10: 0-8031-0446-4
ISBN: 978-0-8031-0446-4
... The use of desktop microcomputers for automatic data acquisition of consolidation test data and data analyses is discussed. The various electrical sensing devices used to measure several test parameters are briefly described. In addition to using the desktop computer for automatic data...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1985
ISBN-10: 0-8031-0423-5
ISBN: 978-0-8031-0423-5
... in the ambient temperature. Experiments on an extruded foam confirm the results of the analytical calculations. Diagrams and tables which are developed on the basis of the above derived relationships, make possible estimation of margin of error for different measuring arrangements for plate devices of usual...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1984
ISBN-10: 0-8031-0227-5
ISBN: 978-0-8031-0227-9
... The characteristics of instruments that are available commercially for the measurement of liquid particle sizes are examined critically in relation to the varied needs of users. Deficiencies in the methods employed are discussed, and examples are given of potential sources of error...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1984
ISBN-10: 0-8031-0403-0
ISBN: 978-0-8031-0403-7
... heating of the sample, high-field mobility variation, etc., are avoided in making spreading resistance measurements by using a voltage of only 5 mV across the probes. However, when a spreading resistance system is operated in an environment containing high levels of radio frequency radiation, AC currents...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1981
ISBN-10: 0-8031-0703-X
ISBN: 978-0-8031-0703-8
... This paper presents a new method of interpreting soil resistivity measurements by a statistical technique. The method may prove to be very useful where large variations in soil resistivity, in a given area, are found. Actual field measurements are used to demonstrate the usefulness...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1980
ISBN-10: 0-8031-0607-6
ISBN: 978-0-8031-0607-9
... This paper reviews the state of the art in the measurement of ventilation and air infiltration. It considers tracer gas techniques and discusses some of the tracer gases used as well as some of the potential sources of error. It also discusses fan pressurization-evacuation procedures...