non-destructive measurement Articles

  • Effects of maturity on chlorophyll-related absorption in nectarines, measured by non-destructive time-resolved reflectance spectroscopy

    The ripening of fruits like nectarines and peaches is characterised by the decrease in chlorophyll content or colour of the fruit flesh. However, measuring the colour of fruit flesh is usually not conducted, as there is a lack of suitable techniques. Time-Resolved Reflectance Spectroscopy (TRS) is a novel technique that can measure the light absorbed by the fruit flesh. Using a laser light beam ...


    By Inderscience Publishers

  • Analysis of gamma ray incoherent scattering for non-destructive testing

    An approach for the analysis of gamma ray incoherent scattering on free and binding electrons is presented for Non-destructive Testing (NDT). The method is based on computational simulation and backscattering gamma ray measurements for carbon steel walls. The results of thickness measurements for steel walls are described by the theory of the energy transfer model.Keywords: gamma ray incoherent ...


    By Inderscience Publishers

  • Quantifying Chlorophyll in leaves using a non-destructive method with the UniSpec-SC

    Chlorophyll is a driver of the physiological function of leaves. Quantifying chlorophyll content can provide information regarding the physiological state of leaves. Chlorophyll tends to decline rapidly when plants are under stress or during leaf senescence (Gitelson & Merzlyak 1994). It is very vital to understand the pattern of the pigment content change if we are to understand ...


    By PP Systems

  • Non-destructive analysis of concrete for corrosion studies using nuclear technique

    Chloride-induced reinforcement corrosion is the principal cause of deterioration of concrete structures in the Arabian Gulf and the world over. Preventive measures against corrosion require maintaining the chloride and sulphate concentration in concrete below the threshold limits specified by the standards. This requires monitoring the chloride and sulphate concentration in concrete, and a ...


    By Inderscience Publishers

  • Fibre optic sensors as a non–destructive tool for structural monitoring

    Structural monitoring is a diagnostic tool for detection of defects/damages and for scheduling maintenance operations. It is essential to determine the safety of the structures by Non–Destructive Testing (NDT) for evaluation of strength/integrity. This assessment is required for the repair, rehabilitation and life extension of the structure. Fibre Optic Sensors (FOS) are attractive sensing ...


    By Inderscience Publishers

  • Process-generated contaminants

    Overview: There is not currently a formal and universally recognised definition of a process-generated substance. Process-generated contaminants can be generated as emissions from combustion processes, abrasion and/or other processes that physically or chemically degrade or otherwise modify the starting material(s), e.g. degradation/composting of organic materials. Such ...

  • Maintenance To-Do: Coil Cleaning

    A coil-cleaning program should be an integral part of maintaining some kinds of process cooling equipment. Most people think of coil cleaning as a building or facility prepares to turn on the air-conditioners for another season. Admittedly, spring is a perfect time to put such cleaning and maintenance at the top of the to-do list. Condenser and evaporator coils are an integral part of HVAC ...


    By Evapco Inc.

  • 13 surprising tools a plumber needs

    What tools does a plumber need in their tool box? Professional installers tell us they use these top 13 plumbing tools time and again. Our list of surprising plumbing tools goes beyond your day-to-day staples of a good hacksaw, a set of well-engineered adjustable spanners, basin spanners, screwdrivers and a decent tape measure. Great all-rounder plumbing tools ...


    By Kingspan Environmental Ltd

  • In-situ stress measurement in concrete - a component for the geolocation of the destruction with earthquakes

    So the in-situ stress sensors in the concrete could measure the load changes and stress changes with a building damage after eniem earthquake immediately on-line. The alert with GPS item data is spread world-wide over the Internet. The combination also for everyone accessible maps of the world can facilitate the management after disasters substantially. So fast data are available over destroyed ...


    By IBJ Technology

  • Detection and measurement of toxic gases from destructive testing of batteries

    Problem Statement New formulations of organic-compound-based batteries for vehicle use must be tested for release of potentially harmful and toxic gases if crushed in accidents. Potential gases include hydrocarbons, fluorocarbons, and hydrogen fluoride, released within seconds of an incident. Actual time-resolved and quantitative data are required from destructive testing to ascertain ...


    By CIC Photonics, Inc.

  • Daily measures of microbes and human health at a non-point source marine beach

    Studies evaluating the relationship between microbes and human health at non-point source beaches are necessary for establishing criteria which would protect public health while minimizing economic burdens. The objective of this study was to evaluate water quality and daily cumulative health effects (gastrointestinal, skin, and respiratory illnesses) for bathers at a non-point source subtropical ...


    By IWA Publishing

  • Cycle chemistry pH measurement

    pH measurement in high purity water has met with variable success. The high resistivity of pure water, the vulnerability to contamination, the variability of reference electrodes and additional temperature effects converge to make tins a particularly challenging measurement. Overcoming these obstacles requires a thorough understanding of the potential problems and their systematic solution. ...


    By SnowPure Water Technologies

  • Level Measurement Problems crushed

    Pulsar non-contacting ultrasonic level measurement equipment copes even with the harshest and noisiest conditions, as this case study looking at stone crusher level measurement proves. Pulsar supplied Level Star non-contacting ultrasonic level measurement to Croft quarry in Leicestershire to control stone level in choke-fed tertiary crushers. The Level Star provides relay closures to control the ...

  • Chemical Tank volume measurement

    In this application, Pulsar equipment replaced other ultrasonic gear which was not coping with the multiple echoes coming from a dome top tank. Level Star 110 non-contacting ultrasonic level measurement was supplied to a major chemical manufacturer, resolving a problem they had in the effective gauging of Sodium hydroxide. The Pulsar equipment replaced ultrasonic equipment previously supplied by ...

  • Deep Well Measurement

    Pulsar's superior echo processing was proven once again in this difficult very deep Welsh wet well application featuring a 23m 'shot' that needed to follow the level between the heads of two submersible pumps. The reliability and versatility of the advanced echo processing technology in Pulsars non-contact ultrasonic range has been utilised at the SwanseaWasteWater TreatmentWorks, in a 23m deep ...

  • Contact-free indirect measurement

    The non-contact mode of measurement is very interesting for hygienic applications in the food-, pharmaceutical- and cosmetics industry, as well as for industrial applications with thick, adhesive and solid containing liquids. Experience has shown that conventional volumetric flow meters quickly come to their limit, while other measuring procedures are often very complex and/or are not suitable ...


    By Lutz Pumpen GmbH

  • Radar measurement in the North Sea

    Background / Task The NLWKN operates the barrier in the inland waterway of the river Ems. They are working with a dense monitoringnetwork which is required e.g. for the preservation of evidence in case of blocks for the protection against storm tides or if the water depth has to be increased to make the Ems navigable for big vessels coming from the dockyard. After an average a new radar ...


    By The OTT Hydromet Group

  • Bed Level Measurement

    Numerous studies and papers have been devoted to the subject of thickener design and operation to achieve specified throughput and discharge densities. Mathematical models have been developed that present methods for sizing thickeners and predicting performance under varying process conditions. The compression effect of deeper beds on dewatering performance is a recognized phenomenon. This is one ...


    By WesTech Engineering, Inc.

  • Measuring accessibility: prescriptions for performance measures of the creative and sustainable city

    Urban journalists and researchers seek performance measures on how one city fares versus another in any dimension. An increasingly important performance measure relates to how well cities advance one important dimension of sustainability - decreased mobile source pollutants and decreased travel for vehicles - and how much driving and congestion is occurring. But is congestion really the problem? ...


    By Inderscience Publishers

  • Paste thickener bed level measurement

    Numerous studies and papers have been devoted to the subject of thickener design and operation to achieve specified throughput and discharge densities. Mathematical models have been developed that present methods for sizing thickeners and predicting performance under varying process conditions. The compression effect of deeper beds on dewatering performance is a recognized phenomenon. This is one ...


    By WesTech Engineering, Inc.

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