External Vibrator
External Vibrator - Related Videos
07:28
Measurement of Bioelectric Current with a Vibrating Probe
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Cited by 15 •
2011
The manufacture, calibration and use of non-invasive vibrating probes to measure bioelectric current in various biological systems is described.
10:13
Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
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Cited by 12 •
2017
This paper introduces a protocol for the preparation of hemi-larynx specimens facilitating a multi-dimensional view of vocal fold vibration, in order to investigate various biophysical aspects of voice production in humans and non-human mammals.
01:20
Externalities
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2025
Externalities are unintended side effects of economic activities that impact third parties who are not directly involved in the market transaction. They can have positive or negative effects that can influence society and the environment in various ways. Positive Externalities Positive externalities occur when a market activity produces benefits for others without those beneficiaries having to pay for it. Examples include: Education: When individuals receive an education, society benefits...
01:19
Vibrating Concrete
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2024
Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...
01:11
Work Done on a System by External Force
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2023
The work done by an external force on a particle changes its kinetic energy. However, internal forces must also be considered for a system of interacting particles. The potential energy formulation helps formulate the effect of internal forces. The net work done by an external force can be written in terms of the total change of mechanical energy, which includes both kinetic and potential energies. In the presence of a non-conservative opposing force, like friction, some part of the work done...
FAQs
The drive type determines how mechanical oscillations are generated and transferred. An eccentric rotating mass creates vibration through unbalanced rotation, while pneumatic and electromagnetic actuators produce motion through their respective actuation systems. These alternatives allow engineers to match the vibration source to the structure, container, or material being processed, supporting controlled operation across different equipment designs.
Mounting conditions control how efficiently generated motion reaches the target surface. A suitable attachment allows the structure or container to receive the intended force and vibration, whereas poor mounting can reduce transmission and limit processing effectiveness. Engineers therefore consider the mounting arrangement together with frequency and force when seeking consistent compaction, flow promotion, or clog prevention.
Frequency and amplitude determine the character and intensity of the motion delivered to a target. Selecting suitable values can improve material movement, concrete compaction, or air removal, while excessive vibration may increase noise, wear, and energy use. The desired result depends on balancing effective motion with operating conditions that avoid unnecessary mechanical stress.
Selection should account for the target structure or container, the material or process requiring vibration, and the necessary force, frequency, and amplitude. Engineers also need to consider how the device will be mounted and whether operation could create excessive noise, wear, or energy consumption. Matching these factors helps maintain processing consistency and equipment performance.
During concrete processing, vibration helps compact the material and remove trapped air from molds. The device transfers motion through the mold or related structure, allowing the concrete to settle more consistently. Appropriate vibration settings can improve structural quality, while excessive or poorly matched operation may reduce efficiency or introduce unnecessary equipment wear.
Applied vibration can promote material movement through hoppers and help prevent bridging or clogging, conditions that interrupt consistent processing. Engineers use the device and its operating settings to transfer sufficient motion to the container or equipment surface. Effective selection and mounting support steadier flow while limiting unnecessary noise, wear, and energy use.