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7104680 |
Thermal analyzer with gas mixing chamber
In a thermomechanical measuring device and a thermogravimetry device, partition walls are provided in two sections such that two kinds of atmospheric gasses, which have passed a sample chamber and...
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7025499 |
Device for testing a material that changes shape when an electric and/or magnetic field is applied
A device for testing a material that changes shape when an electric and/or magnetic field is applied, in particular a piezoactive material, having a generator to generate an electric field and/or a...
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6844720 |
Method and apparatus for calibrating a linear variable differential transformer
A calibration apparatus for calibrating a linear variable differential transformer (LVDT) having an armature positioned in au LVDT armature orifice, and the armature able to move along an axis of...
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6776520 |
Method for determining a coefficient of thermal expansion and apparatus therefor
A method for determining the Coefficient of Thermal Expansion of a specimen. The specimen is placed in the tester and a tensile force is applied to the specimen. The specimen is equilibrated at a...
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6711518 |
Method for electronically aligning the frequency of an infrared transmitter
A method is provided for aligning the center frequency of an infrared transmitter. The method comprises the steps of: (a) providing a voltage-controlled oscillator for driving the infrared...
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6672759 |
Method for accounting for clamp expansion in a coefficient of thermal expansion measurement
The present invention is a method to eliminate the influence of clamp dimensional changes on the displacement measurement during the measurement of the coefficient of thermal expansion (CTE) of...
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6535824 |
Sensor array-based system and method for rapid materials characterization
A modular materials characterization apparatus includes a sensor array disposed on a substrate, with a standardized array and contact pad format; electronic test and measurement apparatus for...
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6527438 |
Aggregate dilatometer device and methods of testing
Methods and devices for improved measurement of the thermal expansion and/or chemical reactivity of aggregates used in concrete and for similar substances. Aggregate is placed into the chamber of a...
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6375349 |
Instrument configured to test multiple samples for the determination of thermophysical properties by the flash method
An instrument for determining thermophysical properties of a solid sample of uniform thickness is disclosed. The instrument comprises a furnace, an elliptical mirror outside the furnace, a light...
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6019506 |
Method for estimating thermal displacement in a machine tool
A method for estimating the thermal displacement of a rotatable component of a machine tool is provided which includes the steps of: (A) generating a signal representative of the temperature of at...
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6007240 |
Method and apparatus for modulated-temperature thermomechanical analysis
By employing a "modulated-temperature" heating program composed of a series of heat-isotherm stages, it is possible to separate the change in dimensions of an oriented material during heating into...
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5826983 |
Thermomechanical analyzer equipped with a thermogravimetry function
A thermomechanical analyzer capable of performing, in addition to thermomechanical measurement, thermogravimetry of a sample of several grams or more only by switching parts of the analyzer. A...
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5528151 |
Thermal fatigue testing using plural test trips with graduated sizing and recessed anchoring
A plurality of fatigue life test strips (16, 18, 20, 22) has each of the strips anchored to a base (12) which is subject to thermal cycling and consequent dimensional change which causes fatigue....
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5362151 |
Device for measuring thermal expansion
A device for measuring the thermal expansion of a sample comprises a measurement radiation generator, a base member incorporating a reference groove and a furnace. The furnace has an external...
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5248200 |
Portable asphalt stress and strain measuring device
A thermally stable fixture for testing asphalt samples is characterized by easurements of both thermal stresses and strains in the sample. The device uses air as the sample cooling or heating fluid...
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5099096 |
Microwave furnace having microwave compatible dilatometer
An apparatus for measuring and monitoring a change in the dimension of a sample being heated by microwave energy is described. The apparatus comprises a microwave heating device for heating a...
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5055648 |
Apparatus and method for mechanical properties testing
An apparatus and method are described for maintaining a constant temperature across an electrically conductive specimen required to be mechanically tested. The invention includes resistance heating...
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4976549 |
Apparatus and method for direct measurement of coal ash sintering and fusion properties at elevated temperatures and pressures
A high-pressure microdilatometer is provided for measuring the sintering and fusion properties of various coal ashes under the influence of elevated pressures and temperatures in various...
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4923307 |
Dilatometer
An improved dilatometer suitable for testing the coefficient of thermal expansion (CTE) of a workpiece. The workpiece having a CTE in the range of -0.2×10 -6 inch/inch °F. to 0.2×10 -6 ...
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4896973 |
Thermomechanical analysis apparatus
A thermomechanical analysis apparatus includes a probe assembly supported in substantially weightless contact with a sample material over a range of displacement of the probe by means of a linear...
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4837776 |
Process for measuring the variations in volume of fluids, especially shrinkage measurements in synthetic resins during hardening and a device for carrying out the process
In a process for measuring the variations in volume, especially shrinkage measurements in duroplastics during the hardening, the material to be measured is acted upon by such a pressure that a...
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4762424 |
Low temperature dilatometer
Low temperature dilatometers are described which employ a combination cryostat/furnace made from an elongated block of metal by drilling separate longitudinal tubular chambers for insertion of a...
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4687343 |
Deformation dilatometer platens
Deformation dilatometers are described for heating, deforming and cooling a test specimen, as well as for measuring changes in the linear dimensions of that specimen. A ferrous metal specimen, that...
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4548515 |
Multiple sensor dilatometer
Dilatometers are described which employ measuring heads having multiple linear variable differential transformer dilation sensors for concurrently measuring the thermal dilation of multiple...
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4521119 |
Constant load dilatometers
Differential dilatometers are described which employ a linear variable differential transformer dilation sensor in which the core and/or coil is independently supported to accommodate the...
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4354764 |
Specimen testing apparatus
A specimen testing apparatus is disclosed, including a sensing device for engaging a specimen mounted on a support, an electrical measuring system associated with the sensing device for producing...
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4351615 |
Differential dilatometer
A differential dilatometer for simultaneously measuring the relative expansion of two different solid test samples, one of which can be a reference sample. The test sample and the reference are...
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4069703 |
Plastic orientation measurement instrument
An apparatus for measuring degree of orientation in small oriented plastic samples which operates on the principle of measurement of dimensional changes in the samples before, during and after they...
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4054049 |
Thermal extensometer
The device employs an electrical transducer for measuring thermal deformation in a specimen with a high degree of resolution. The device basically comprises a link which linearly spans the specimen...
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3919879 |
Electrical zeroing means for a dilatometer
In a dilatometer, of the type using a linear, variable, differential transformer that includes two pairs of cantilevered leaf springs for resiliently and independently supporting the core and the...
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3898836 |
Differential dilatometer
In a dilatometer, of the type having a linear variable differential transformer and first and second push rod means of substantially equal length responsive thereto, means are provided for...
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3885416 |
Dilatometer apparatus
A dilatometer which comprises an improved support construction and arrangement of the probe measuring rods in conjunction with an improved measuring system for detecting the desired dimensional...
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3805589 |
QUENCHING DILATOMETER
In a dilatometer, of the type having a linear, variable, differential, transformer and push rod means responsive thereto, means are provided for rapidly heating and cooling a test sample which is...
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3748892 |
HIGH PRECISION DILATOMETER
A dilatometer including a furnace, a double bar support positioned within an evacuated tube mounted in the furnace, and supporting a test specimen and an elongated push rod in contact with the...
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3589167 |
THERMOMECHANICAL ANALYSIS APPARATUS
A thermomechanical analysis apparatus is described which includes a probe assembly and means for supporting the assembly in substantially weightless contact with a sample material over a range of...
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3583208 |
HIGH TEMPERATURE THERMOMECHANICAL ANALYZER
An insulated heater with close clearance, a temperature-compensated transducer, and an all quartz probe and sample holder provide baseline stabilization for a high temperature thermomechanical...
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3581553 |
HEAT EXPANSION DETERMINING MEANS
Separate means measure the expansions in opposite directions of a spindle and its carrier housing due to heat. Comparison of the outputs of the two measuring means provides a signal indicative of...
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3474658 |
THERMOMECHANICAL ANALYZER
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3433051 |
APPARATUS FOR DETERMINING MECHANICAL AND THERMAL PROPERTIES OF METALS
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3377838 |
Apparatus for measuring various transformation characteristics of metallic materials
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3271996 |
Apparatus for thermal analysis
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3106086 |
Strain gage dilatometer
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2968177 |
Transverse shrinkage tester
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2831340 |
Self-calibrating dilatometer for high temperature use
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