摘要:
A musical instrument or multimedia input device is disclosed. User input is by hitting or striking water in order to produce an at least partially transient acoustic disturbance, vibrations, or change in the water. In one embodiment rigid pipes of various lengths or diameters emit fluid for being struck by a user at an open end of each pipe. The other end of each pipe is connected to an elastic tubing or other elastic medium, such as a diaphragm or bulb, resulting in a hydraulic resonator. In another embodiment the resonators are formed from variously sized bottles or flasks encased in cement, except for the mouths of the bottles. Each hydraulic resonator may be fitted with a sensor that senses the vibrations in the water and amplifies the vibrations into a sound reproduction system, such as an entirely acoustic impedance matcher or an electrical amplification system.
摘要:
Multilayer anti-reflective coatings having four or more layers are disclosed. In one aspect, the multilayer anti-reflective coating comprises a first layer having a refractive index n1, where n1
摘要:
A system and method for integrating a production line process control system (PCS) with production line machine controllers to record data about processes completed on a production line. The PCS receives data from line controllers regarding processes that are completed on each part. Process data including process order data is stored by the PCS and used to instruct line controllers on whether a particular part should be accepted for machining or handled in another way. Rejected parts are flagged electronically so when they arrive at a subsequent line controller, they are directed to a chute containing parts removed from the production process. The PCS and line controllers exchange data about each part and applicable processes as it proceeds through production. The PCS records the data to develop a complete part history. The PCS integrates with a plant quality and tracking system that records the historical data.
摘要:
A method and apparatus are provided for testing the adhesive strength of a bond between an adhesive, a coating such as paint, or some other material, and an underlying substrate to which the test substance is bonded. The coating to be tested is applied atop the substrate in a smooth, continuous layer. An aperture is formed through the substrate and the test substance. A thin film patch is positioned atop an area of the test substance directly above the aperture. The film extends beyond the perimeter of the aperture and resides in contact with the test substance. The test substance is scored about the perimeter of the thin film patch. A thin plate which maintains its elastic property with only minor yielding during the test is bonded to the test substance by means of a layer of high-strength adhesive interposed between the plate and the test substance. The adhesive strength of the bond between the plate and the substance being tested must be greater than the bond between the substance being tested and the substrate. The test assembly thereby produced is clamped within a test fixture and pressure is applied through an aperture in the test fixture from the side of the substrate opposite the surface of the substrate to which the test substance is bonded. With increasing pressure the plate is deformed at the aperture through the substrate thereby applying force to the area of the test substance surrounding the thin film patch until the critical pressure is reached and the bond between the test substance and the substrate fails.
摘要:
A method of chemically strengthening a glass. The method includes ion exchange of the glass in a first bath, followed by immersion in the second bath. The first bath is diluted with an effluent ion. The second bath has a smaller concentration of the effluent ion than the first bath. The method provides a compressive stress at the surface of the glass that is sufficient to arrest flaws introduced by contact forces at the surface of the glass while having sufficiently deep compressive depth-of-layer for high reliability.