摘要:
The present invention relates to a test specimen for testing the through-thickness properties of a fiber-reinforced composite material. The specimen comprises a first loading portion having a first longitudinal axis in a first plane and a second loading portion having a second longitudinal axis in a second plane. The first and second planes are substantially parallel and the first and second axes are oblique. The first and second loading portions partially overlap to form a test gauge portion that is integral with the first and second loading portions. The first loading portion extends beyond the test gauge portion in opposite directions along the first axis and the second loading portion extends beyond the gauge portion in opposite directions along the second axis. This allows a force be applied to the test gauge portion through the first and second loading portions.
摘要:
A method for making a hybrid component comprises the steps of placing a lower shell in the lower half of an RTM form tool; placing layers of composite fabric on top of the lower shell to define a composite core; placing an upper shell on top of the layers; closing the RTM form tool; infiltrating the composite fabric with resin; curing the resin. At least one of the lower and upper shells comprises pins projecting generally perpendicularly to its surface, and the pins penetrate the composite fabric.
摘要:
The present invention relates to a test specimen (11) for testing the through-thickness properties of a fibre-reinforced composite material. The specimen comprises a first loading portion (10) having a first longitudinal axis in a first plane and a second loading portion (20) having a second longitudinal axis in a second plane. The first and second planes are substantially parallel and the first and second axes are oblique. The first and second loading portions (10, 20) partially overlap to form a test gauge portion (30) that is integral with the first and second loading portions (10, 20). The first loading portion (10) extends beyond the test gauge portion (30) in opposite directions along the first axis and the second loading portion (20) extends beyond the gauge portion (30) in opposite directions along the second axis. This allows a force be applied to the test gauge portion through the first and second loading portions.
摘要:
A system and method employing image analysis may provide an objective measure of the state of gingival tissue health. A region of analysis on an image of gingival tissue may be divided into pixels. Each pixel may have an associated color made up of component R, G and B values. A user may obtain an objective measurement of oral cavity soft tissue health by determining an objective measurement of the component color values of a gingival tissue image region and performing statistical analysis on the color values.
摘要:
A tooth whitening product is provided. The tooth whitening product includes film formed from a water hydratable polymer and a plasticizer. The film has a first side and a second side and a tooth whitening agent applied as coating to one side of the film.
摘要:
Methods, luminaires and systems for matching a composite light spectrum to a target light spectrum are disclosed. Method embodiments may be optimized for simultaneously maximizing luminous output with minimal chromaticity error. Method embodiments may further be optimized for simultaneously minimizing both chromaticity and spectral error. Embodiments of the present invention may be used with composite light sources having four or more distinct dominant colors within the visible spectrum.
摘要:
A secondary particle detector 302 for a charged particle beam system 300 includes a scintillator 304 and a transducer 312, such as a photomultiplier tube, positioned within a vacuum chamber 107. Unlike prior art Everhart-Thornley detectors, the photomultiplier is positioned within the vacuum chamber, which improves detection by eliminating optical couplings and provides flexibility in positioning the detector.
摘要:
Methods, luminaires and systems for matching a composite light spectrum to a target light spectrum are disclosed. Method embodiments may be optimized for simultaneously maximizing luminous output with minimal chromaticity error. Method embodiments may further be optimized for simultaneously minimizing both chromaticity and spectral error. Embodiments of the present invention may be used with composite light sources having four or more distinct dominant colors within the visible spectrum.
摘要:
A tooth whitening product is provided. The tooth whitening product includes film formed from a water hydratable polymer and a plasticizer. The film has a first side and a second side and a tooth whitening agent applied as coating to one side of the film.
摘要:
This invention is an improvement upon the basic adaptive signal processors, the Multi-Stage Wiener Filter and the cascaded canceller. The invention combines the concepts of soft weighting the adaptive weights of either type of processor disclosed herein with reiteratively processing the outputs by returning them to the input of the chosen adaptive signal processor. The combination of these functions improves the Signal to Interference plus Noise Ratio (SINR), the Probability of Detection (Pd), and/or the Bit Error Rate (BER). The invention improves statistical convergence of these types of metrics such that fewer training data samples are needed to achieve a particular satisfactory value of these metrics than would occur using traditional computational adaptive signal processors.