DE418744C - Tester for vibration resistance with device for reading the vibration amplitude - Google Patents

Tester for vibration resistance with device for reading the vibration amplitude

Info

Publication number
DE418744C
DE418744C DEF56986D DEF0056986D DE418744C DE 418744 C DE418744 C DE 418744C DE F56986 D DEF56986 D DE F56986D DE F0056986 D DEF0056986 D DE F0056986D DE 418744 C DE418744 C DE 418744C
Authority
DE
Germany
Prior art keywords
vibration
tester
reading
amplitude
resistance
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
Application number
DEF56986D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OTTO FOEPPL
Original Assignee
OTTO FOEPPL
Publication date
Priority to DEF56986D priority Critical patent/DE418744C/en
Application granted granted Critical
Publication of DE418744C publication Critical patent/DE418744C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/06Special adaptations of indicating or recording means
    • G01N3/068Special adaptations of indicating or recording means with optical indicating or recording means

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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Description

Prüfer für Schwingungsfestigkeit mitVorrichtung zur Ablesung des Schwingungsausschlages. Zur Feststellung der Schwingungsfestigkeit von Baustoffen bedient man sich einer Maschine, in der ein Probestab Schwingungen ausführt. Die Größe des Schwingungsausschlages muß genau bestimmt werden, da sie ein Maß für die Größe der Beanspruchung gibt. Die neue Vorrichtung dient diesem Zweck: Auf dem schwingenden Körper, z. B. der Schwungscheibe a (Abb. i), die auf der am Ende im Körper b festgehaltenen Welle c (Probestab) sitzt und die Verdrehungsschwingungen in Pfeilrichtung ausführen kann, sind zwei schräg zueinander liegende Striche d und e, die auch die Begrenzung eines Bildes sein können, aufgezeichnet. Es genügt auch, wenn die Striche in den Schwingungstotlagen schräg gegeneinander gerichtet erscheinen. Bei der Schwingung wandert jeder der beiden Striche in der Pfeilrichtung hin und her. In der inneren Totlage nehmen also die Striche die Lagen @d' und e` (A.bb. z) ein, die den Schnittpunkt g miteinander haben. (Die zeitliche Versetzung schadet nichts, wenn die Bewegung sehr rasch erfolgt oder wenn sie photographisch aufgenommen wird.) je größer der Schwingungsausschlag f ist, desto weiter rückt g nach rechts, so daß der Abstand zwischen g und dem Scheibenrand unmittelbar als Maß für den Schwingungsausschlag f dienen kann. Bei raschen Schwingungen sieht das Auge unmittelbar den Punkt g. Bei langsamen Schwingungen kann die Lage von g photographisch bestimmt werden.Tester for vibration resistance with device for reading the vibration amplitude. One uses one to determine the vibration resistance of building materials Machine in which a test rod vibrates. The size of the oscillation amplitude must be precisely determined as it gives a measure of the magnitude of the stress. The new device serves this purpose: On the vibrating body, e.g. B. the Flywheel a (Fig. I), which is on the shaft held at the end in body b c (test stick) is seated and can execute the torsional vibrations in the direction of the arrow, are two inclined dashes d and e, which are also the delimitation of a Image can be recorded. It is also sufficient if the lines are in the oscillation dead zones appear obliquely directed towards each other. With the vibration each of them wanders two lines back and forth in the direction of the arrow. So take in the inner deadlock the dashes the positions @d 'and e` (A.bb. z), which the intersection point g with each other to have. (The time offset does no harm if the movement is very rapid or if it is photographed.) the greater the oscillation amplitude f, the further g moves to the right, so that the distance between g and the edge of the disc can serve directly as a measure for the oscillation amplitude f. With rapid vibrations the eye immediately sees point g. In the case of slow vibrations, the location can be determined photographically by g.

Claims (1)

PATENTANSPRUCH: Prüfer für Schwingungsfestigkeit mit Vorrichtung zur Ablesung des Schwingungsausschlages, dadurch gekennzeichnet, daß auf dem schwingenden Körper ein Gebilde aufgezeichnet ist, das zwei in den Totlagen schräg gegeneinander gerichtete Linien enthält, derart, daß die inneren Totlagen einen optischen Schnittpunkt derselben ergeben, der zur Messung des Schwingungsausschlages verwendbar ist. PATENT CLAIM: Tester for vibration resistance with device for reading the vibration amplitude, characterized in that a structure is recorded on the vibrating body which contains two lines directed obliquely against each other in the dead spots, in such a way that the inner dead spots result in an optical intersection of the same, which leads to Measurement of the oscillation amplitude can be used.
DEF56986D Tester for vibration resistance with device for reading the vibration amplitude Expired DE418744C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF56986D DE418744C (en) Tester for vibration resistance with device for reading the vibration amplitude

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF56986D DE418744C (en) Tester for vibration resistance with device for reading the vibration amplitude

Publications (1)

Publication Number Publication Date
DE418744C true DE418744C (en) 1925-09-17

Family

ID=7108131

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF56986D Expired DE418744C (en) Tester for vibration resistance with device for reading the vibration amplitude

Country Status (1)

Country Link
DE (1) DE418744C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6510416B1 (en) * 1999-08-23 2003-01-21 Tokheim Corporation Method and apparatus for performing refueling transactions using customer-issued speech commands

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6510416B1 (en) * 1999-08-23 2003-01-21 Tokheim Corporation Method and apparatus for performing refueling transactions using customer-issued speech commands

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