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US 9,618,435 B2Granted
Umbilical bend-testing
AssigneeDmar Engineering, Inc.
InventorsYongtian Kang, Dagang Zhang, Zhiming Huang, Quan Yuan
Life of this patent
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Abstract
Apparatus and methods related to umbilical bend-testing are described. For example, some embodiments may contain a three-level support structure, umbilical terminal locker, bending machine, compression testing device, and stress-strain collection system, and may be used for the bending fatigue endurance test for umbilical samples.
Claims15
An apparatus for bend-testing a umbilical sample, comprising:
- a support structure;
- a first umbilical terminal locker configured to lock a first end of the umbilical sample, the first umbilical terminal locker being translatable relative to the support structure;
- a second umbilical terminal locker configured to lock a second end of the umbilical sample, the second umbilical terminal locker being non-translatable relative to the support structure;
- a bending machine configured to (1) detachably connect to the first umbilical terminal locker and (2) detachably connect to the umbilical sample between the first and the second ends;
- a compression testing device configured to compress the umbilical sample along a transverse axis of the umbilical sample;
- and
- a stress-strain data collecting system.
4 more elements
A method for umbilical bend-testing, comprising:
- connecting two ends of a umbilical sample to two umbilical terminal lockers on a support structure, wherein the umbilical terminal lockers comprise a translatable umbilical terminal locker and a non-translatable umbilical terminal locker;
- connecting a trolley of the end-thrust bending device to the translatable umbilical terminal locker;
- connecting a sensor system to the umbilical sample;
- moving the trolley using one or more hydraulic arms of the end-thrust bending device to push one end of the umbilical sample along a longitudinal axis of the umbilical sample to bend the umbilical sample;
- and
- analyzing the data obtained from the sensor system using a strain tester system to obtain end-thrust bending fatigue endurance properties of the umbilical sample.
3 more elements
A method for umbilical bend-testing, comprising:
- connecting two ends of a umbilical sample to two umbilical terminal lockers on a support structure;
- fixing at least one of the two umbilical terminal lockers along a longitudinal axis of the umbilical sample;
- connecting a transverse-tension bending device with the umbilical sample using a hydraulic arm with a fixture at its end attaching to the umbilical sample between the two ends;
- connecting a sensor system to the umbilical sample;
- moving the hydraulic arm to bend the umbilical sample;
- and
- analyzing the data obtained from the sensor system using a strain tester system to obtain transverse-tension bending fatigue endurance properties of the umbilical sample.
4 more elements
A method for umbilical bend-testing, comprising:
- connecting two ends of a umbilical sample to two umbilical terminal lockers on a support structure;
- fixing at least one of the two umbilical terminal lockers along a longitudinal axis of the umbilical sample;
- connecting two compression testing devices with the umbilical sample using two hydraulic arms with fixtures at their ends attaching to the umbilical sample between the two ends;
- connecting a sensor system to the umbilical sample;
- moving the hydraulic arms to bend the umbilical sample;
- and
- analyzing the data obtained from the sensor system using a strain tester system to obtain four-point bending fatigue endurance properties of the umbilical sample.
4 more elements
A method for umbilical bend-testing, comprising:
- connecting two ends of a umbilical sample to two umbilical terminal lockers on a support structure;
- fixing at least one of the two umbilical terminal lockers along a longitudinal axis of the umbilical sample;
- connecting a compression testing device with the umbilical sample using a hydraulic arm with a fixture at its end attaching to the umbilical sample between the two ends;
- connecting a sensor system to the umbilical sample;
- moving the hydraulic arm to apply an external pressure to the umbilical sample;
- and
- analyzing the data obtained from the sensor system using a strain tester system to obtain compressive resistance properties of the umbilical sample.
4 more elements
Dependencies are inferred from the claim text.