Abstract:
La présente invention concerne un un procédé de caractérisation paramétrique d'un échantillon comportant, pour une valeur d'une grandeur expérimentale donnée, les étapes suivantes : - une première étape de mesure de la réponse expérimentale de l'échantillon ; - une deuxième étape de détermination d'une réponse théorique de la réponse de l'échantillon en ajustant au moins un paramètre de l'échantillon associé à une modélisation de la mesure de façon à rendre l'écart entre la réponse expérimentale et la réponse théorique inférieur ou égal à un seuil donné, une valeur initiale étant affectée au paramètre avant l'ajustement ; les première et deuxième étapes étant répétées pour une pluralité de valeurs de la grandeur expérimentale, le procédé étant caractérisé en ce que, au-delà de la deuxième répétition des première et deuxième étapes, pour une valeur d'une grandeur expérimentale donnée, la valeur initiale du paramètre à ajuster est déterminée à partir d'au moins deux valeurs ajustées dudit paramètre obtenues lors des précédentes premières et deuxièmes étapes.
Abstract:
A method for measuring the displacement of a surface relative to a base reference. The method includes generating point cloud data between a reference point and a surface disposed distally from the reference point to define a three dimensional image of the surface. The method also includes determining the location and direction of key reference parameters of the object defined by the three dimensional image from the point cloud data. The method also includes obtaining base reference data in a prescribed co-ordinate system in respect of a base reference relative to the surface. Further, the method provides for processing the point cloud data and the base reference data, orientating the point cloud data relative to the key reference parameters defined by the base reference data and transforming the point cloud data into a co-ordinate system coinciding with the base reference data.
Abstract:
Die Erfindung betrifft eine Prüfanlage zum Untersuchen eines Hohlkörpers, insbesondere einer Zylinderbohrung in einem Motorblock. Die Prüfanlage umfasst eine Messvorrichtung, welche einen länglichen Körper und mehrere Sensoren umfasst, die mit dem Körper verbunden und zum Durchführen einer Abstandsmessung eingerichtet sind. Die Prüfanlage umfasst weiterhin elektronische Steuermittel, welche dazu eingerichtet sind, die Messvorrichtung in einen zu untersuchenden Hohlkörper einzufahren und auf Grundlage von Abstandsmessdaten der Sensoren einen Innen-durchmesser des Hohlkörpers zu bestimmen. Die Prüfanlage ist erfindungsgemäß dadurch gekennzeichnet, dass zum Untersuchen von Hohlkörpern unterschiedlicher Durchmesser zumindest ein Anteil der Sensoren als bewegbare Sensoren gestaltet ist, welche relativ zum länglichen Körper der Messvorrichtung bewegbar sind. Zudem sind die elektronischen Steuermittel dazu eingerichtet, abhängig von einem zu untersuchenden Hohlkörper eine Messposition der bewegbaren Sensoren relativ zum länglichen Körper zu wählen. Es ist eine Kalibrierstation vorgesehen und die elektronischen Steuermittel sind zum Durchführen eines Kalibriervorgangs für die bewegbaren Sensoren eingerichtet. Zudem wird ein entsprechendes Verfahren offenbart.
Abstract:
In some examples, a coating may include at least one feature that facilitates visual determination of a thickness of the coating. For example, the coating may include a plurality of microspheres disposed at a predetermined depth of the coating. The plurality of microspheres may define a distinct visual characteristic. By inspecting the coating and viewing at least one of the microspheres, the thickness of the coating may be estimated. In some examples, the plurality of microspheres may be embedded in a matrix material, and the distinct visual characteristic of the microspheres may be different than the visual characteristic of the matrix material. In other examples, the at least one feature may include at least one distinct layer in the coating system that includes a distinct visual characteristic, such as a color of the distinct layer.
Abstract:
The invention is directed to a detectable and stable composition comprising an organofunctional silane and/or hydrolyzate and/or partial or complete condensate thereof, a colloidal metal oxide, a water soluble organic dye having a positive charge and a counterion derived from a carboxylic acid of from 1 to 6 carbon atoms, and water. The invention is also directed to a method for determining the uniformity and film thickness of a detectable composition applied to a substrate comprising applying to the surface of the substrate the detectable composition and measuring an optical property of the applied coating, the resulting measurement being related to the uniformity of the applied composition.
Abstract:
The test glass changer for optical measurement of layer characteristics in vacuum coating systems which have a movable substrate holder (2) for guiding at least one substrate on a path through at least one stream of a coating material, having a holder (6), which is rigidly connected to a rotary axle (4) and which is rotatable relative to the substrate holder (2) about the rotary axle (4), for at least one test glass element and having a control device for the introduction of in each case one test glass element into an optical path of an optical measurement device and into the at least one stream of the coating material, wherein the holder (6) has at least two recesses (7), which are offset eccentrically with respect to the axle (4), for in each case one test glass element, and a rotational movement of the holder (6) about the axle (4) can be effected by means of the control device, is characterized in that a centering device (10) is provided by means of which a torque and a holding moment can be exerted on the holder (6) in order to move a test glass element arranged in one of the recesses (7) into a measurement position of the measurement device. In the method for test glass changing by means of the device, it is provided that, before a test glass element arranged in one of the recesses (7) is moved into a measurement position of the measurement device, a rotational movement of the holder (6) is effected by means of the control device, which rotational movement causes said test glass element to be moved into a first position whose angular distance from the measurement position is smaller than the angular distance between the recesses (7), and said test glass element is subsequently moved into the measurement position by means of the centering device (10).
Abstract:
The invention relates to an analysis apparatus for the contactless analysis of the shape of a transparent body, in particular of a substantially spherical active substance bead, having at least one support for the body and at least one image recording apparatus, wherein the support has a test image, in particular a test grid, and at least one detection means is provided in order to detect, using the detection means, the three-dimensional shape and/or contour of the body and/or the test image which is modulated by the optical properties of the body, in particular the test grid. The invention also relates to a method for the contactless analysis of the shape of the transparent body.