Strain measurement using experimental stress analysis and strain gauges
Determining and identifying stress in material: This is done using experimental stress analysis. Strain gauges are the principal measuring instrument used in this context. Here you will find useful information on measurement using strain gauges and experimental stress analysis:
- How to professionally and correctly install strain gauges
- What to keep in mind when using experimental stress analysis
- How to benefit from innovative optical strain gauge technology in your application.
The reference book on experimental stress analysis using strain gauges
Get a complete overview of the topic of "Measurements using strain gauges" - in Karl Hofmann's 250-page reference book.
Available as a free download only from us!
Installing strain gauges
How to install a strain gauge?
Watch our training video to learn step by step how to proceed when measuring with strain gauges.
White Papers on Strain Measurement using Strain Gauges
Read this technical article to understand how strain gauges with high resistance to alternating loads help to do successful structural testing for high-strain components.
Weldable strain gauges are a good choice for many testing applications. This video answers the most frequent questions on the correct welding of electrical and optical strain gauges.
In order for a strain gauge to deliver an accurate measurement, it must be properly installed onto the measuring object. This white paper will help you choose the correct adhesive and how to properly apply it to the object.
Condition Monitoring Systems (CMS) are designed to ensure the long-term efficiency of wind power plants. The focus moves here to optical sensor technology as an alternative to electrical technology.
This article describes application of an automatic hole-drilling residual stress measurement system to polymeric moldings.
This article is about the selection of the correct adhesive for the installatin of strain gauges dependent on the material and temperature range.
Compliance with a strain gauge's maximum permissible bridge excitation voltage is essential to avoid measurement errors. Read this white paper to learn what the significance of this value is and how it is calculated.
Each strain gauge produces a temperature-dependent measurement signal. Read in this article how the temperature-dependent apparent strain can be reduced by temperature response matching.
There are many different types of strain gauges. Our video explains how you can quickly and easily find the right strain gauge for your application.
Well-proven foil-type strain gauges have many advantages over alternative technologies believes HBM's Dr.-Ing. André Schäfer
White Papers on measurements using optical strain gauges
The principle of measurement of the fiber Bragg grating may be briefly explained as a periodic microstructure that selectively reflects wavelengths. You can learn more about it here in this article.
A fiber Bragg grating is just a few millimeters long, highly sensitive and very reliable. We explain the most important properties for you in an article.
Significant lightweight construction advantages in complex adhesive structures in vehicle manufacturing
Learn more about the calculation procedure developed by Dr. Halvar Schmidt to design complex adhesive structures in automobile manufacturing while achieving significant advantages from lightweight construction.
Suitable sensor technology must be employed to detect the damage to wind turbine rotor blades early enough, and minimize the economic consequences. The sensors must be able to withstand tough ambient conditions and must...
Our comprehensive article provides basic knowledge on the topic: Everything you need to know about measurement using optical strain gauges: From technological background information through calibration of interrogators and...
When are electrical strain gauges adequate, when do you need to use optical strain gauges? This article describes the fundamental differences between the technologies and their implications for the respective fields of...
Fiber Bragg Grating Sensors (FBGS) are gaining increasing attention in the field of experimental stress analysis.
White Papers on the Wheatstone Bridge Circuit
From measured strain to mechanical stress: analysis of biaxial stress state with unknown principal directions
The three rosettes available in the 0°/45°/90° and 0°/60°/120° designs are designated by the letters a, b and c. 3 strains, ea, eb, and ec are measured accordingly using a rosette with 3 measuring grids.
After the principal...
This brochure provides you with concise knowledge about the application of Wheatstone Bridge Circuits.
Wheatstone Bridge Circuits Show Almost No Nonlinearity and Sensitivity Errors When Used for Single Strain Gage Measurements
The measurement of strain with single strain gages is an important part of experimental stress analysis. The type of circuitry employed influences the linearity and sensitivity of the measurements. Wheatstone bridge circuits and...
Specialized articles on experimental stress analysis
If measuring points are not directly accessible, the measuring instruments need to be connected using long cables. The disadvantage: The lead resistance can negatively affect the measurement. Various types of strain gauge...
This paper describes some statistical techniques for taking measured data and projecting what the expected time history and resulting fatigue damage would be if test data were collected for much longer times.
Fiber-reinforced composites are used in an increasing number of applications. These materials too can be tested using strain gauges, which is shown in this article.
It is essential to properly protect a strain gauge measuring point from environmental influences. This article provides you with the information you need to find the right covering agent to ensure protection of your measuring...
Most electronics engineers don't give much thought to strain measurements—EEs are usually more concerned with electrical reliability than with structural integrity. But for engineers who develop products such as aerospace...
Strain gauges can be integrated directly into a structure instead of being installed on the surface of a material. Read our extensive instructions on the topic to learn how to successfully integrate strain gauges into structures.
In the field of Experimental Stress Analysis hundreds and sometimes thousands of single strain gages are to be measured. Calibration of such big systems can be a tedious task.
The signals of strain gage transducers are very small. In consequence, error signals can even exceed the measuring signal amplitudes and therefore must be suppressed by sophisticated measuring circuits.
Linearity and Sensitivity Error in the Use of Single Strain Gages with Voltage-Fed and Current-Fed Circuits
An important part of experimental stress analysis is the measurement of strain with single strain gages and the type of circuitry employed influences the linearity and sensitivity of the measurements.
Experimental Stress Analysis with HBM
Strain gauges from HBM
Our tip: HBM Academy seminars
In numerous HBM Academy seminars and workshops you learn how to install strain gauges - step by step, explained in detail by our competent trainers.