DE689650C - rer loads of materials testing machines - Google Patents
rer loads of materials testing machinesInfo
- Publication number
- DE689650C DE689650C DE1937L0092270 DEL0092270D DE689650C DE 689650 C DE689650 C DE 689650C DE 1937L0092270 DE1937L0092270 DE 1937L0092270 DE L0092270 D DEL0092270 D DE L0092270D DE 689650 C DE689650 C DE 689650C
- Authority
- DE
- Germany
- Prior art keywords
- loads
- testing machines
- rer
- materials testing
- deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0664—Indicating or recording means; Sensing means using witness specimens
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
Kontrollstab, insbesondere zur Nachprüfung.kleinerer Lasten von Werkstoffprüfmaschinen Zur Nachprüfung von Werkstoffprüfmaschinen werden vielfach Kontrollstäbe aus vollem Material benutzt, deren Verlängerung unter der Last mit Spiegelapparaten 0. dgl. gemessen wird. Die untere Durebmessergrenze für derartige Kontrollstäbe liegt bei 25 mm, da sich der Spiegelapparat oder die an seiner Stelle verwendete Längenmeßvorrichtung bei kleineren .Durchmessem nicht mehr anbringen läßt. Diese Kontrollstäbe sind zur Prüfung von kleineren Lasten nicht mehr geeignet.Control rod, especially for checking smaller loads of materials testing machines For the verification of material testing machines, control rods are often used from full Material used, the extension of which under the load with mirror devices 0. is measured. The lower diameter limit for such control rods is included 25 mm, since the mirror device or the length measuring device used in its place with smaller .diameter can no longer be attached. These control rods are for Testing of smaller loads is no longer suitable.
Anderseits sind sog. Ringkraftprüfer bekannt, welche eine ringförmige oder ähnliche Gestalt von verhältnismäßig großen Abmessungen besitzen und welche durch die festzustellende Last verformt werden. Diese Ringkraftprüfer haben den Nachteil, daß zur Erzielung einer genügenden Verformung die Ab messungen, also beispielsweise der Durchmesser des Ringes, verhältnismäßig groß sein müssen und daß infolgedessen die beanspruchten Teile des Prüfgerätes verhältnismäßigweit von der Zugmittellinie der nachzuprüfenden Werkstoffprüfmaschine entfernt liegen. Dies führt wiederum leicht zu den bekannten Schwierigkeiten ungleicher Beanspruchung und damit ungenauer Messung. On the other hand, so-called ring force testers are known, which have a ring-shaped or similar shape of relatively large dimensions and which deformed by the load to be detected. These ring force testers have the Disadvantage that to achieve sufficient deformation from the measurements, so for example the diameter of the ring, must be relatively large and that as a result the stressed parts of the test device are relatively far from the traction center line are away from the material testing machine to be checked. Again, this leads easily to the known difficulties of unequal loading and thus inaccurate measurement.
Diese Nachteile werden durch den erfindungsgemäßen Kontrollstab, der insbesondere zur Nachprüfung kleinerer Lasten von Werkstoffmaschinen dient, beseitigt. These disadvantages are alleviated by the control rod according to the invention, which is used in particular to check smaller loads on material machines, eliminated.
Die Erfindung besteht darin, daß die zur Anbringung der Spiegelapparate o. dgl. dienenden Teile des Kontrollstabes zwar einen hierfür ausreichenden Durchmesser besitzen, der dazwischenliegende Teil jedoch zur Erzielung einer genügenden Verformung aus zwei oder mehreren hintereinandergeschalteten, an sich bekannten Verformungskörpern ringförmiger oder ähnlicher Gestalt mit verhältnismäßig kleinen Abmessungen besteht. The invention consists in that the attachment of the mirror apparatus o. The like. Serving parts of the control rod although a sufficient diameter for this own, but the intermediate part to achieve sufficient deformation of two or more deformation bodies known per se connected in series annular or similar shape with relatively small dimensions.
Hierdurch wird eine genügend große Gesamtverformung trotz kleinerer Abmessung und insbesondere kleinerer Abstände der beanspruchten Teile von der Zugmittellinie erreicht.This results in a sufficiently large overall deformation despite a smaller one Dimension and especially smaller distances between the stressed parts and the traction center line achieved.
In der Zeichnung ist der Erfindungsgegenstand beispielsweise und schematisch dargestellt. In the drawing, the subject matter of the invention is, for example, and shown schematically.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937L0092270 DE689650C (en) | 1937-03-26 | 1937-03-26 | rer loads of materials testing machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937L0092270 DE689650C (en) | 1937-03-26 | 1937-03-26 | rer loads of materials testing machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE689650C true DE689650C (en) | 1940-03-29 |
Family
ID=7287449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1937L0092270 Expired DE689650C (en) | 1937-03-26 | 1937-03-26 | rer loads of materials testing machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE689650C (en) |
-
1937
- 1937-03-26 DE DE1937L0092270 patent/DE689650C/en not_active Expired
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