http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0826147-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_197a2151189f8dbe2bac443e1949a604 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-725 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-72 |
| filingDate | 1996-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b62f8787935e0b0ccfcf0d5ae21c4203 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c2231ddfdb53eb919f9348b29cd95cd8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cdcdc32fb3ec1d3d0c823a02bd849b5c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d39cfd2448bd5f7f580a30c3a1711a2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8fa9f41511e69afb0adc8cd7d41e11d2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fcd80c18df65bfc6cada6dc9c4e41df6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a31c41e8aed27a772ef398298ff154f |
| publicationDate | 1998-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0826147-A1 |
| titleOfInvention | Method of determining the neutral temperature of welded tracks |
| abstract | The invention concerns a method of determining the longitudinal load on supports subjected to longitudinal loads such as railway tracks, in particular for determining the neutral temperature of railway tracks. The support is excited longitudinally in an acoustic frequency range and the magnetic Barkhausen noise value at the surface of the excited region is measured; according to the invention, measurements of the magnetic Barkhausen noise are taken for different longitudinal stress states and used to plot the calibration curve of the magnetic Barkhausen noise as a function of longitudinal stress, the Barkhausen noise being measured at a minimum of three points on the face of the inlaid support, and the calibration curve is used to determine the longitudinal load on the cross-section in question using (where necessary weighted) averaging. The neutral temperature is then determined where necessary on the basis of the longitudinal load and taking into account the modulus of elasticity, dilatation factor and temperature of the railway track. The invention also concerns a device for determining the longitudinal load on supports subjected to longitudinal loads such as railway tracks, in particular for determining the neutral temperature of railway tracks. The said device comprises an acoustic frequency excitation unit, a magnetic sensor which is brought into magnetic contact with the support, a frequency-selective measurement unit connected to the magnetic sensor and sensitive to frequencies higher than that of the excitation unit, and a processor which calculates values on the basis of the measured values. According to the invention, an air gap gauge (403) which determines the distance between the sensor (404) and the support surface is allocated to the magnetic sensor. Said gauge is linked to the input of the processor (406) which adjusts the measured Barkhausen noise value in accordance with the air gap. |
| priorityDate | 1995-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID226397242 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID6433 |
Total number of triples: 19.