{"id":2000,"date":"2024-07-31T18:06:54","date_gmt":"2024-07-31T18:06:54","guid":{"rendered":"https:\/\/svestudy.com\/?page_id=2000"},"modified":"2025-05-11T10:55:34","modified_gmt":"2025-05-11T10:55:34","slug":"ame-unit-9-q13","status":"publish","type":"page","link":"https:\/\/svestudy.com\/?page_id=2000","title":{"rendered":"AME Unit 9 Q13"},"content":{"rendered":"\n
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With reference to strain gauges:
(a) describe, with the aid of a sketch, the principle and operation of a simple strain gauge, stating the formula used to determine its change in properties;(5)
(b) explain how the device is connected into an electrical circuit to accurately measure pressure;(3)
(c) state TWO practical applications in a vessel.(2)<\/p>\n\n\n

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Strain Gauge: Principle and Operation<\/p>\n\t\t\t

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A strain gauge is a transducer that converts mechanical strain into an electrical signal. It’s widely used in various applications to measure force, pressure, weight, and acceleration. \u00a0<\/a><\/p>\n\n\n\n

1. Transducer-specific strain gauges | Tokyo Measuring Instruments Laboratory Co., Ltd. <\/a><\/a><\/a><\/a><\/p>\n\n\n\n

2. Strain Gauge Applications | Dewesoft <\/a><\/a><\/a><\/p>\n\n\n\n

Principle<\/h3>\n\n\n\n

The fundamental principle of a strain gauge is based on the change in electrical resistance of a conductor due to mechanical strain. When a conductor is stretched or compressed, its dimensions change, affecting its resistance. A strain gauge is designed to exploit this phenomenon. \u00a0<\/a><\/p>\n\n\n\n

1. Strain Gauge – Principle, Applications, Types [GATE Notes] – BYJU’S <\/a><\/a><\/a><\/a><\/p>\n\n\n\n

2. [Updated] Strain Gauge: Principle, Types, Features and Applications – Encardio Rite <\/a><\/a><\/a><\/p>\n\n\n\n

Construction<\/h3>\n\n\n\n

A typical strain gauge consists of a thin metallic foil pattern bonded to a flexible backing. The foil is arranged in a zigzag pattern to maximize the change in resistance for a given strain. \u00a0<\/a><\/p>\n\n\n\n

1. Strain Gauges, How does it work? – Omega Engineering <\/a><\/a><\/a><\/a><\/p>\n\n\n\n

2. [Updated] Strain Gauge: Principle, Types, Features and Applications – Encardio Rite <\/a><\/a><\/a><\/p>\n\n\n\n

Operation<\/h3>\n\n\n\n
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  1. Bonding:<\/strong> The strain gauge is bonded to the object under observation using a suitable adhesive. \u00a0 <\/a>1. Strain Gage Bonding Procedure – Learn\/Examine – Kyowa Electronic Instruments <\/a><\/a><\/a><\/a>product.kyowa-ei.com<\/a><\/a><\/li>\n\n\n\n
  2. Strain Application:<\/strong> When the object is subjected to a force, it deforms, causing the strain gauge to stretch or compress. \u00a0 <\/a>1. [Updated] Strain Gauge: Principle, Types, Features and Applications – Encardio Rite <\/a><\/a><\/a><\/a>www.encardio.com<\/a><\/a><\/li>\n\n\n\n
  3. Resistance Change:<\/strong> As the strain gauge deforms, its resistance changes proportionally to the applied strain. \u00a0 <\/a>1. Measuring Strain with Strain Gages – NI – National Instruments <\/a><\/a><\/a><\/a>www.ni.com<\/a><\/a><\/li>\n\n\n\n
  4. Signal Conditioning:<\/strong> The change in resistance is typically very small, so it’s often measured using a Wheatstone bridge circuit to amplify the signal. \u00a0 <\/a>1. Measuring Strain with Strain Gages – NI – National Instruments <\/a><\/a><\/a><\/a>www.ni.com<\/a><\/a><\/li>\n\n\n\n
  5. Output:<\/strong> The amplified signal can then be converted into a digital format for display or further processing.<\/li>\n<\/ol>\n\n\n\n

    Key Points:<\/h3>\n\n\n\n