The Experts below are selected from a list of 6 Experts worldwide ranked by ideXlab platform

James M. Pickard - One of the best experts on this subject based on the ideXlab platform.

  • Application of isothermal Calorimetry and uv spectroscopy for stability monitoring of pentaerythritol tetranitrate
    Thermochimica Acta, 1993
    Co-Authors: Larry R Dosser, James M. Pickard
    Abstract:

    Abstract Thermal stabilities for three pentaerythritol tetranitrate (PETN) samples with variable surface areas were monitored by isothermal Calorimetry and UV spectroscopy over the range 363–408 K. Isothermal induction times measured with constant volume Calorimetry under an air atmosphere, and NO evolution rates monitored by UV absorbance at 213 nm under vacuum correlated with the PETN surface area at temperatures equal or exceeding 383 K. Rate data measured at 383 K are in accord with predictions based on detailed kinetic modeling. Below 383 K, NO evolution data suggested that additional geometric factors may be significant in controlling PETN stability. Mechanisms for the influence of surface area upon the rate-determining step are addressed.

Larry R Dosser - One of the best experts on this subject based on the ideXlab platform.

  • Application of isothermal Calorimetry and uv spectroscopy for stability monitoring of pentaerythritol tetranitrate
    Thermochimica Acta, 1993
    Co-Authors: Larry R Dosser, James M. Pickard
    Abstract:

    Abstract Thermal stabilities for three pentaerythritol tetranitrate (PETN) samples with variable surface areas were monitored by isothermal Calorimetry and UV spectroscopy over the range 363–408 K. Isothermal induction times measured with constant volume Calorimetry under an air atmosphere, and NO evolution rates monitored by UV absorbance at 213 nm under vacuum correlated with the PETN surface area at temperatures equal or exceeding 383 K. Rate data measured at 383 K are in accord with predictions based on detailed kinetic modeling. Below 383 K, NO evolution data suggested that additional geometric factors may be significant in controlling PETN stability. Mechanisms for the influence of surface area upon the rate-determining step are addressed.

Marc Bellenoue - One of the best experts on this subject based on the ideXlab platform.

  • Characterization of Spark Ignition energy transfer by optical and non-optical diagnostics
    2017
    Co-Authors: Carlos Benito Parejo, Quentin Michalski, Camille Strozzi, Julien Sotton, Marc Bellenoue
    Abstract:

    This study focuses on the measurement of energy deposited in the fluid by an electrical discharge in different test conditions. An experimental setup is developed for this purpose: a transistorized coil system supplies the electrical energy input for the spark, from 25 to 45 mJ, which is measured at a pair of pin-to-pin electrodes. The energy deposit, ranging from 8 to 15 mJ, is measured using two different techniques: constant volume Calorimetry, and Speckle-based Background-Oriented Schlieren (SBOS). Efficiency of the energy transfer is estimated. Calorimetry shows that efficiency depends on inter-electrode gap and gas conditions, increasing with pressure and gap. SBOS provides spatial distributions of density field, temperature and enthalpy. Calorimetry and SBOS provide similar results in terms of the rate of energy deposit over time. Different test conditions are obtained changing inter-electrode gap (from 1 to 3 mm), energy input and gas pressure (from 0.5 to 4 bar).

Carlos Benito Parejo - One of the best experts on this subject based on the ideXlab platform.

  • Characterization of Spark Ignition energy transfer by optical and non-optical diagnostics
    2017
    Co-Authors: Carlos Benito Parejo, Quentin Michalski, Camille Strozzi, Julien Sotton, Marc Bellenoue
    Abstract:

    This study focuses on the measurement of energy deposited in the fluid by an electrical discharge in different test conditions. An experimental setup is developed for this purpose: a transistorized coil system supplies the electrical energy input for the spark, from 25 to 45 mJ, which is measured at a pair of pin-to-pin electrodes. The energy deposit, ranging from 8 to 15 mJ, is measured using two different techniques: constant volume Calorimetry, and Speckle-based Background-Oriented Schlieren (SBOS). Efficiency of the energy transfer is estimated. Calorimetry shows that efficiency depends on inter-electrode gap and gas conditions, increasing with pressure and gap. SBOS provides spatial distributions of density field, temperature and enthalpy. Calorimetry and SBOS provide similar results in terms of the rate of energy deposit over time. Different test conditions are obtained changing inter-electrode gap (from 1 to 3 mm), energy input and gas pressure (from 0.5 to 4 bar).

Quentin Michalski - One of the best experts on this subject based on the ideXlab platform.

  • Characterization of Spark Ignition energy transfer by optical and non-optical diagnostics
    2017
    Co-Authors: Carlos Benito Parejo, Quentin Michalski, Camille Strozzi, Julien Sotton, Marc Bellenoue
    Abstract:

    This study focuses on the measurement of energy deposited in the fluid by an electrical discharge in different test conditions. An experimental setup is developed for this purpose: a transistorized coil system supplies the electrical energy input for the spark, from 25 to 45 mJ, which is measured at a pair of pin-to-pin electrodes. The energy deposit, ranging from 8 to 15 mJ, is measured using two different techniques: constant volume Calorimetry, and Speckle-based Background-Oriented Schlieren (SBOS). Efficiency of the energy transfer is estimated. Calorimetry shows that efficiency depends on inter-electrode gap and gas conditions, increasing with pressure and gap. SBOS provides spatial distributions of density field, temperature and enthalpy. Calorimetry and SBOS provide similar results in terms of the rate of energy deposit over time. Different test conditions are obtained changing inter-electrode gap (from 1 to 3 mm), energy input and gas pressure (from 0.5 to 4 bar).