摘要:
A thermal displacement estimating method includes: detecting each temperature of a predetermined heat generating portion and a predetermined main body structure portion by a temperature measurement device; and estimating a thermal displacement of the heat generating portion by an estimation model based on a detected temperature. The estimating of the thermal displacement includes: obtaining a conversion coefficient equivalent temperature change amount equivalent to a change amount of a conversion coefficient before and after a cooling capacity change from a relationship between a predetermined cooling heat amount of a cooling device and the conversion coefficient between the temperature and the displacement for estimating the thermal displacement from the detected temperature and/or a cooling heat amount equivalent temperature change amount equivalent to a changed heat amount before and after the cooling capacity change from a relationship between the predetermined cooling heat amount and a temperature equivalent to the cooling heat amount.
摘要:
A triple bubbler system includes a first fluid probe, a second fluid probe, a third fluid probe, a gas source operably coupled to the first fluid probe, the second fluid probe, and the third fluid probe and configured to meter gas through the first fluid probe, the second fluid probe, and the third fluid probe to form bubbles at tips of each of the first fluid probe, the second fluid probe, and the third fluid probe, and a cover member disposed over the tips of the first, second, and third fluid probes and configured to at least partially prevent bubbles formed and escaping the tips of the first, second, and third fluid probes from interfering with other bubbles formed at each other tips. The bubbler system includes a thermocouple having a plurality of junctions disposed along an axis parallel to longitudinal axes of the first, second, and third fluid probes.
摘要:
A machine learning device includes: a measured data acquisition unit that acquires a measured data group; a thermal displacement acquisition unit that acquires a thermal displacement actual measured value about a machine element; a storage unit that uses the measured data group acquired by the measured data acquisition unit as input data, uses the thermal displacement actual measured value about the machine element acquired by the thermal displacement acquisition unit as a label, and stores the input data and the label in association with each other as teaching data; and a calculation formula learning unit that performs machine learning based on the measured data group and the thermal displacement actual measured value about the machine element, thereby setting a thermal displacement estimation calculation formula used for calculating the thermal displacement of the machine element based on the measured data group.
摘要:
Described are methods and systems using optical fiber interferometry to sense interference causing events in a region of interest and differentiate between a strain event and a thermal event. Other methods and systems relate to the use of optical fiber interferometry for determining temperature offset in a region of interest and using the determined temperature offset for determining temperature in the region of interest.
摘要:
A deformation measuring apparatus of a specimen includes: a holder which supports the specimen; a contact portion disposed facing the holder and including a hemispherical tip; a position controlling portion which adjusts a position of the contact portion along a thickness direction of the specimen to allow the hemispherical tip to be in contact with a surface of the specimen; a heating chamber which accommodates the holder and the contact portion and heating the specimen; and a sensing portion which measures at least one of a thermal deformation force (F) of the specimen or a thickness direction thermal expansion (Δh) of the specimen.
摘要:
A thermal displacement correction device for a machine tool is provided with detection result determination unit configured to determine, based on an actual position and a reference position detected by position detection unit, whether or not the actual position is based on correct detection, correction error calculation unit configured to calculate a correction error in the actual position if it is determined that the result of detection is based on correct detection, and correction amount modification unit configured to modify a thermal displacement correction amount based on the correction error.
摘要:
A method for the thermomechanical analysis of a sample (P) of a material including (a) controlling the temperature of the sample (P), (b) recording data representative for a length variation (dL) of the sample (P), (c) evaluating the data in order to determine a reversible component (dLrev), (d) calculating a corrected reversible component (dLrev-corr; αrev-corr) and/or of the coefficient of thermal expansion (α).
摘要:
A method for estimating stress of an electronic component. An electronic component including first and second elements and conductive bumps is provided. Each conductive bump has two surfaces connected to the first and second elements respectively. Two adjacent conductive bumps have a pitch therebetween. The conductive bumps includes a first conductive bump and second conductive bumps. A stress value of the first conductive bump related to a testing parameter is calculated. A stress value of each second conductive bump related to the testing parameter is calculated according to a first calculating formula. The first calculating formula is σ 2 = L D - 2 r σ 1 , σ2 is the stress of each second conductive bump, L is a beeline distance between each second conductive bump and the first conductive bump, D is an average value of the pitches of the conductive bumps, r is a radius of each surface, and σ1 is the stress value of the first conductive bump.
摘要:
An assembly comprising a sample and a device for generating a high temperature gradient in said sample comprises: a chamber inside which the sample is placed; a resistor passing through the sample; first inductive means at the periphery of the chamber, for creating an electromagnetic field; and second inductive means that are arranged inside the chamber and connected to the resistor, and that are capable of picking up said electromagnetic field so as to make an induced current flow through said resistor, the chamber being transparent and the first inductive means comprising at least one first coil at least one coil of which contains windings separated by at least 2 mm, this separation being configured to allow an optical means for measuring deformation to be targeted.
摘要:
A symmetrical, flat laminate structure used to minimize variables in a test structure to experimentally gauge white bump sensitivity to CTE mismatch is disclosed. The test structure includes a flat laminate structure. The method of using the test structure includes isolating a cause of a multivariable chip join problem that is adversely impacted by warpage and quantifying a contribution of the warpage, itself, in a formation of the multivariable chip join problem.