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Related Concept Videos

Measurements of Strain01:27

Measurements of Strain

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Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
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Stress-Strain Diagram01:10

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A stress-strain diagram is a crucial tool that graphically displays a material's mechanical characteristics. This diagram is derived from a tensile test performed on a carefully prepared cylindrical specimen. The specimen has two gauge marks inscribed on its central part, and the distance between these marks is known as the gauge length. The cylindrical specimen is placed in a testing machine, which applies an increasing centric load. As this load grows, so does the gauge length. This...
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Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

Design Example: Strain Gauge Bridge or Wheatstone Bridge

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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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Shearing Strain01:20

Shearing Strain

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The shearing strain represents a cubic element's angular change when subjected to shearing stress. This type of stress can transform a cube into an oblique parallelepiped without influencing normal strains. The cubic element experiences a significant transformation when exposed solely to shearing stress. Its shape alters from a perfect cube into a rhomboid, clearly demonstrating the effect of shearing strain. The degree of this strain is considered positive if it reduces the angle between the...
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Temperature Dependent Deformation01:12

Temperature Dependent Deformation

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In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
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Strain and Elastic Modulus01:15

Strain and Elastic Modulus

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The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
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Intermediate Strain Rate Material Characterization with Digital Image Correlation
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Load-application devices: a comparative strain gauge analysis.

Renato Sussumu Nishioka1, Luis Gustavo Oliveira de Vasconcellos1, Renata Pilli Jóias2

  • 1Department of Dental Materials and Prosthodontics, São José dos Campos Dental School, Universidade Estadual Paulista, São José dos Campos, SP, Brasil.

Brazilian Dental Journal
|July 23, 2015
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Summary
This summary is machine-generated.

A novel load-application device (LAD) for dental implants was developed and validated against a universal testing machine (UTM). The LAD proved to be a reliable alternative, producing similar microstrain results under various loading conditions.

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Area of Science:

  • Biomaterials Science
  • Dental Mechanics
  • Mechanical Engineering

Background:

  • Dental implant research often uses low loading values, necessitating specialized equipment.
  • Universal testing machines (UTMs) are standard but may not always be optimal for specific dental applications.
  • Strain gauge analysis is crucial for measuring microstrains in implant components.

Purpose of the Study:

  • To develop a load-application device (LAD) as an alternative to the UTM for dental implant testing.
  • To compare the performance of the developed LAD with the UTM under both axial and non-axial loading conditions.
  • To evaluate the reliability of the LAD in inducing comparable microstrains to implants.

Main Methods:

  • A load-application device (LAD) was designed and constructed.
  • Dental implant and abutment assemblies were created in polyurethane blocks.
  • Strain gauges were attached to implants, and specimens were subjected to axial and lateral loads using both LAD and UTM.
  • Microstrain data were collected and statistically analyzed using ANOVA and Tukey's test.

Main Results:

  • No statistically significant differences were observed between the LAD and UTM when subjected to central and lateral axial loads.
  • The LAD successfully induced microstrains in dental implants comparable to those generated by the UTM.
  • The results were consistent across different loading types, indicating device reliability.

Conclusions:

  • The developed load-application device (LAD) is a dependable and viable alternative to the universal testing machine (UTM) for dental implant research.
  • The LAD provides similar microstrain measurements to the UTM, making it suitable for evaluating implant biomechanics.
  • This device offers a potentially more accessible or specialized option for dental load testing.