Aug 26, 2019
For testing boreholes and grooves use pluggauges. For flat test surfaces, special interfacial gauges are used.
There are different shaped measuring surfaces, such as cylinder, sphere, hexagon or square or threaded.
The minimum gauge is measured with the good side. For this, it must be pushed with slight pressure into the hole or groove, while the scrap side may only beak.
New pluggauges usually have a wear interference on the good side, which is why the printed value “0” does not match the actual value.
Example: The good side of a new pluggauge 8 H7 has a dimension of 8.0027 mm, but the tolerance is defined from 8.000 to 8.0129.
However, this wear interference can only be found on the good side.
Measuring Technology: Pluggauges.
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Measuring Technology
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Oct 25, 2019
One measuring device for round outside diameters of for example shafts, bolts or pipes is called outside micrometer or quick micrometer.
The micrometer and the bracket form a fixed unit. The measuring ranges in trade and industry are mostly between 0 and 500 mm.
There are micrometers that have plates with a larger diameter than the screw shaft to measure gear
toothing. These are called plate or flank micrometers.
Radial grooves are measured with outside micrometers with flat and leveled measuring surfaces. Furthermore there are inserts with tapered measuring surfaces.
External threads of screws, threaded bolts, etc. are measured with outer micrometers, which have changing inserts to adapt to the pitch and type of thread.
Measuring Technology: Outside
micrometer for the measurement of outer diameters between 25 and 50 mm.
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Oct 25, 2019
X-Rays can penetrate matter. It is weakened differently depending on the type of material. The attenuation of X-rays is the most important factor in radiographic imaging.
The radiation intensity of the X-ray beam decreases exponentially with I = I_0e^-µx of the path length x traveled in the specific material.
Measuring technology: Dependent on thickness and material properties the
radiation intensity of the X-rays changes.
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X-Rays
Detector
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Aug 23, 2019
If a thread needs to be checked to ensure the quality of a part, the threaded hole is tested with a screw limit plug gauge.
The cylinder of the go-side shall be screwed into the thread without exerting force.
This is done over the complete length of the thread.
The no-go gauge of a screw limit plug gauge is marked with a red dot or a red stripe.
It shall be screwed into the thread as well without exerting force. During unscrewing, the number of turns are counted. If the number is higher than three, the thread is faulty.
The respective limit gauges can be found at each end of the screw limit plug gauge.
Measuring Technology: A
screw limit plug gauge M16x1,5-6G LH. Red marked is the no-go gauge.
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Measuring Technology
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Mar 30, 2023
A tensile test on plastics is a test procedure used to determine the mechanical properties of plastics.
In this test method, a sample of the plastic is clamped in a testing machine and subjected to a tensile force under controlled conditions.
During the tensile test, various parameters are measured, including the load, strain and stress of the plastic.
These parameters are used to determine the elasticity, strength and toughness of the material.
The results of tensile testing can help optimize material design by providing information about the properties of the plastic that are important for the specific
application.
Tensile testing is used in various industries such as automotive, aerospace, electronics and medical to evaluate the quality and reliability of
of plastic parts and components.
Measuring Technology: Tensile Testing1
Measuring Technology: Tensile testing2
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