Special issue on high accuracy optical and non-contact measuring techniques. Measurement of surfaces with contact and non-contact methods.
نویسندگان
چکیده
منابع مشابه
Non-Contact Surface Geometry Measurement Techniques
It is often necessary to be able to create computer models from physical objects. This is often done for the purposes of reverse engineering, or archival. Many of the contact methods, such as callipers or Coordinate Measuring Machines, are unsuitable for use in areas where the material is delicate. There are numerous techniques that are capable of performing quick accurate measurements of surfa...
متن کاملNon-contact Deflection Measurement at High Speed
ABSTRACT: Traditional stationary or low speed deflection measurements become problematic on roads with high traffic densities. Traffic safety is decreased when survey vehicles like low speed deflectographs or stationary falling weight devices carry out measurements on highway networks. This paper describes how the Greenwood High Speed Deflectograph applies Laser Doppler Technology to provide in...
متن کاملMeasurement of hand-vibration transmissibility by non-contact measurement techniques
Background: Workers who use hand-held vibrating tools may experience finger blanching attacks due to episodic vasospasm in the digital vessels. In occupational medicine, the pathological consequences to the exposure to handtransmitted vibration are known as vibration induced white finger (VWF). In many cases, workers are recommended to use anti-vibration gloves and a standard procedure (ISO 108...
متن کاملNon-Contact Fluorescence Optical Tomography with Adaptive Finite Element Methods
Fluorescence optical tomography is a rapidly expanding biomedical imaging modality, which exploits the deep penetration of near infrared light in tissue and molecularly targeting fluorescence agents, to locate diseased tissue regions in three dimensions. Mathematically, the fluorescence optical tomography problem is an inverse problem which involves the identification of coefficients of a coupl...
متن کاملEffect of Contact Pressure and Frequency on Contact Heat Transfer Between Exhaust Valve and its Seat
The hot gases produced by the internal combustion engines passes through the exhaust valve and causes high temperatures in the exhaust valve and its seat. To avoid damaging the exhaust valve, heat must be transferred from the valve to its seat during the contact they make at the opening and closing cycle. Heat transfer rate from the exhaust valve to its seat is a function of many factors. One o...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Precision Engineering
سال: 1985
ISSN: 0374-3543
DOI: 10.2493/jjspe1933.51.674