I know of acoustic signature analysis that has been applied during a pressure test on a nuclear reactor pressure vessel (probably in the 1980's)in order to detect crack growth.
PIPESTRESS by DST Computer Services is a valid program for piping stress analysis. I have used it in the past.
For questions I suggest you contact DST directly at dst@iprolink.ch. I found them quite helpful
Look into PIPESTRESS by DST Computer Services. This is one of the few programs that is kept up to date and has a very good quality control system, which is important for nuclear applications. They usually provide a trial version for some time.
Ruth 44
Idelchick's book is "Handbook of hydraulic resistance"
2nd edition, 1986 Hemisphere Publishing Corporation
ISBN 0-89116-284-4
I would try in a university library first
good luck
Ruth44
For the seismic load of piping supported in a building one needs a floor response spectrum for the higher elevations within the building. The floor response spectrum is derived from the ground response spectrum, the soil properties and the dynamic properties of the building. This usually...
Can somebody please supply me with the following dimensions for ACME 2-615 8UN Class 2G general purpose and stub threads for the male:
- basic major dia
- pitch dia
- basic minor dia
- pitch
I do not have access to the appropriate ANSI std
do you know the frequency of the loads that excite your pipe? If so, than your first effort should be the get the natural frequencies of your pipe away from the load frequencies.
For plate thickness up to 16 mm and at room temp.
yield stress is 265 MPa and ultimate stress is between 410 and 530 MPa per En 10028-2.
Re allowable stress see previous answer
There was an article in "Machine Design" of Sept. 15 1960 by W.J. Graff titled:
"Thermal Conductance across metal joints".
It shows graphs of conductance vs pressure for several combinations.
I have a PDF file with the article, the readability is poor in some parts.
I'd be...
Normally one calculates the stress range first based on the loads and piping /vesssel layout. Than get the allowable number of cycles from the S-N curve and compare this with the specified (expected) number of cycles.
If the allowable number is too small you have to change the design.
There is a clue to this question in ASME Sct III for nuclear components. The design philosophy for Class 1 vessels in NB-3000 is very similar to Sct VIII-2.
For Service Levels that have a low probability of occurrence Sct III allows higher stresses. E.g for Service Level B (which used to be...
pk123
You should check both shear and bending.Draw the moment and shear diagram and check the section with the max. shear load and bending moment.
For a hand calc I would assume a triangular distribution of the reacting load.
Ruth44
I have a Mannesmann data sheet for WB36It is in German and dated 1972. It lists chemical and mechanical properties as well as recommendatîons for application etc.
If it helps you I can email it to you.
Ruth44
