منابع مشابه
Control of Construction Vibrations with an Autonomous Crack Comparometer
Concern over construction vibration-induced cracking has led to development of a new approach to vibration monitoring, an autonomous crack comparometer (ACC). This paper describes sensor performance and chronicles the first steps in the development of this concept, illustrated in Figure 1. A single sensor measures both weather-induced micrometer changes in crack width and those produced by habi...
متن کاملWireless crack measurement for control of construction vibrations
Miniaturized, wireless instrumentation is now a reality and this paper describes development of such a system to monitor crack response. Comparison of environmental (long-term) and blast-induced (dynamic) crack width changes in residential structures has lead to a new approach to monitoring and controlling construction vibrations. A low power consumption potentiometer displacement transducer an...
متن کاملEvaluation of hand-arm and whole-body vibrations in construction and property management.
OBJECTIVES To identify and measure the magnitude of hand-arm vibration (HAV) and whole-body vibration (WBV) sources (tools, vehicles etc.) in use within a previously unexamined sector: a construction and property management company. To evaluate the effect of factors such as age of tool, materials being worked on, number and location of tool handles, tool weight, and manufacturer brand on HAV ma...
متن کاملGood Vibrations
How and where the brain forms associations between sensation and action are crucial questions in the field of cognitive neuroscience. In this issue of Neuron, add to an already impressive body of work elucidating the neural mechanisms responsible for forming categorical decisions about vibrotactile stimuli that guide behavior. Here they show that single neurons in premotor cortex represent, rem...
متن کاملEmphasizing Vibrations
In the article ‘Illuminating Resolution’ (GEO ExPro Vol. 8, No. 3) we described the evolution of seismic acquisition technologies that aim to achieve the geophysicists’ goals of illumination and resolution. One development featured in the article is the concept of extending the frequency content or bandwidth of seismic signals, especially at the low-frequency end, in order to achieve better ver...
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ژورنال
عنوان ژورنال: Shock and Vibration
سال: 1998
ISSN: 1070-9622,1875-9203
DOI: 10.1155/1998/917298