Torque measurement using Stroboscope Method

Torque measurement using Stroboscope Method

Principle of Stroboscope Method

When a shaft is connected between a driving engine and driven load, a twist (angular displacement) occurs on the shaft between its ends. This angle of twist is measured and calibrated in terms of torque.


Construction of Stroboscope Method

The main parts of the mechanical torsion meter are as follows:

A shaft which has two drums and two flanges mounted on its ends as shown in the diagram. One drum carries a pointer and other drum has a torque calibrated scale. A stroboscope is used to take readings on a rotating shaft.

Operation of Stroboscope Method:

One end of the shaft of the torsion meter is connected to the driving engine and its
other end to the driven load.
An angle of twist is experienced by the shaft along its length between the two flanges
which is proportional to the torque applied to the shaft.
A measure of this angle of twist becomes a measure of torque when calibrated.


The angular twist caused is observed on the torque calibrated scale corresponding to the position of the pointer. As the scale on the drum is rotating, reading cannot be taken directly. Hence a stroboscope is used. The stroboscope’s flashing light is made to fall on the scale and the flashing frequency is adjusted till a stationary image is obtained. Then the scale reading is noted.


Application of Stroboscope Method
➢ Simple and inexpensive method
➢ Power of shaft can be calculated (flashing frequency gives information about
speed).

Limitation of Stroboscope Method
➢ Poor accuracy due to small displacement of the pointer.
➢ Sensitivity is reduced even due to small variation in speed.
➢ It can be used only on shafts rotating at a constant speed.


Comments

Post a Comment

Popular posts from this blog

Laser Cutting Machine

Laser cutting     is a fabrication process which employs a focused, high-powered   laser beam   to cut material into custom shapes and designs. This process is suitable for a wide range of materials, including metal, plastic, wood, gemstone, glass, and paper, and can produce precise, intricate, and complex parts without the need for custom-designed tooling. There are several different types of laser cutting available, including fusion cutting, oxidation cutting, and scribing. Each laser cutting process can produce parts with precision, accuracy, and high-quality edge finishes, and with generally less material contamination, physical damage, and waste than with other conventional cutting processes, such as mechanical cutting and waterjet cutting. However, while laser cutting demonstrates certain advantages over more conventional cutting processes, some manufacturing applications can be problematic, such as cutting reflective material or material requiring secondary machining and finishi
Read more

Coordinate Measuring Machine Probes

Image
  A  Coordinate Measuring Machine  is defined by the ability of its probe. As with CMMs, there are several types of probes available. There is the contact probe, which measures the workpieces by making contact with them. The non-contact probe that employs lasers or machine vision probes which scan with optical sensors. Contact probes are a more accurate way of measuring. However, the laser or machine vision probes are far quicker to use, while still holding a high degree of accuracy. There are also multi-sensor probes which combine both touch and optical scanning, giving the benefit of both types in one probe. Coordinate Measuring Machines: Contact Probes The two most common contact probes are Touch Trigger Probes and Analog Scanning Probes. Touch Trigger Probes: A touch trigger probe has a stylus that is attached to a bearing plate. This is then connected to pressure sensors inside the housing of the probe. Each time the probe makes contact with the workpiece, it generates an electric
Read more

Biomechanical engineering

Image
 Biomechanical engineering is a field that integrates principles of mechanical engineering with biological systems, particularly focusing on the interaction between mechanical factors and living organisms. Here are some key aspects and applications of biomechanical engineering: Biomechanics : This involves the study of the mechanical aspects of biological systems, such as how forces affect cells, tissues, and organs. Biomechanical engineers apply principles from mechanics (statics, dynamics, fluid mechanics, etc.) to understand and analyze biological structures and functions. Medical Devices : Biomechanical engineers design and develop medical devices such as prosthetics, implants, orthotics, and assistive devices. These devices aim to improve mobility, enhance bodily functions, or replace damaged biological structures. Tissue Engineering : This field combines engineering principles with biology to create biological substitutes that restore, maintain, or improve tissue function. Biomec
Read more