Elastic transducers consist of an elastic sensing element that converts input forces into output displacements or strains. Common elastic elements include diaphragms, capsules, and bellows. Strain gauges and load cells are often used as secondary transducers to measure the strain developed. Strain gauges work by converting mechanical deformation (strain) into an electrical signal through changes in electrical resistance, capacitance, or other properties from stresses or strains on the elastic material. Elastic transducers have applications in fields like structural engineering, aerospace, material testing, biomedical, and geotechnical engineering.

1. ELASTIC TRANSDUCERS

2. BASICS
 ELASTIC TRANSDUCERS CONSIST OF FORCE RESPONSIVE ELASTIC SENSING
ELEMENT.
 ELASTIC MEMBER WILL BE IN THE FORM OF DIAPHRAGM,CAPSULE,BELLOWS.
 BOURDON TYPE ELASTIC ELEMENTS ARE COMMONLY USED TO DETECT,IT CONVERTS THE INPUT FORCE
INTO OUTPUT DISPLACEMENT OR STRAIN.
 STRAIN DEVELOPED IS MEASURED WITH AN APPROPRIATE SECONDARY TRANSDUCER.
 EXAMPLE: STRAIN GAUGE,LOAD CELL.

5. STRAIN GAUGE
 ELASTIC TRANSDUCERS SUCH AS ,STRAIN GAUGE WORKS ON THE PRINCIPLE OF CONVERTING
 THIS CHANGE LEADS TO THE ALTERATIONS IN THE ELECTRICAL RESISTANCE,CAPACITANCE,OR OTHER
MECHANICAL DEFORMATION(STRAIN) INTO AN ELECTRICAL SIGNAL.
 WHEN SUBJECTED TO STRESS OR STRAIN,THE ELASTIC MATERIAL WITHIN THE TRANSDUCER
UNDERGOSE A CHANGE IN ITS DIMENSION.
ELECTRICAL PROPERTIES OF THE MATERIAL.

7. APPLICATIONS
 STRUCTURAL ENGINEERING
 AEROSPACE INDUSTRY
 MATERIAL
TESTING
 BIOMEDICAL
 GEOTECHNOLOGICAL ENGINEERING
 PRESSURE
SENSOR

8. TYPES OF STRAIN GAUGE
 UNBONDED METAL STRAIN GAUGE
 BONDED METAL WIRE STRAIN GAUGE
 BONDED METAL FOIL STRAIN GAUGE
 VACCUM DEPOSITED THIN METAL FILM STRAIN GAUGES
 SPUTTER DEPOSITED THIN METAL STRAIN
GAUGES
 DIFFUSED METAL STRAIN
GAUGES
 BONDED SEMICONDUCTOR STRAIN
GAUGES

9. METAL FOIL STRAIN GAUGE
PRINCIPLE:
WHEN A MECHANICAL STRAIN IS APPLIED TO A STRAIN GAUGE, THE FOIL
UNDERGOES A DEFORMATION ,RESULTING IN DEFORMATION AND CAUSES
CHANGES IN THE RESISTANCE OF THE FOIL.

10.  BONDED TYPE STRAIN GAUGE CONSIST OF THE BENDABLE FEATURES AND A STRAIN
GAUGE THAT CONNECTS THE BENDABLE PART.
 IT IS USED FOR MEASUREMENT THAT TAKES PLACE ON THE LARGE
SURFACE

12. LOAD CELL

13. LOAD CELL
 LOAD CELLS ARE SENSORS THAT DETECT FORCE(MASS,TORQUE…..). WHEN FORCE IS APPLIED TO THE LOAD
,IT CONVERTS THE FORCE INTO AN ELECTRICAL SIGNAL.
 LOAD CELLS ARE ALSO KNOWN AS “LOAD TRANSDUCERS”, BECAUSE THEY CONVERT A LOAD INTO ELECTRICAL
SIGNALS.
APPLICATION
 IT IS WIDELY USED IN INDUSTRUES FOR MEASURING FORCES AND WEIGHTS.THIS IS ESSENTIAL IN APPLICATION
LIKE MANUFACTURING,WHERE ACCURATE FORCE MEASUREMENTS ARE CRUCIAL FOR QUALITY PRODUCTS.
CELL

14. LOAD CELL

17. THANK YOU