A system for monitoring a condition of a component of a well system located proximate to a seabed includes a first sensor assembly to couple to a telescopic joint coupled to an upper end of a riser, wherein the first sensor assembly is configured to measure at least one of a vibration, an inclination, and a strain in the riser, and a data processing system in signal communication with the first sensor assembly, wherein the data processing system is configured to estimate the condition of a subsea stack system based on measurements provided by the first sensor assembly.

The present invention relates to a conveying hose (100) comprising a hose body (10) for holding a conveyed material (11) to be transported and comprising a wear measuring device (13), wherein the wear measuring device (13) comprises a signal unit (17), a first electrode element (14) formed from a first metal material and a second electrode element (15) formed form a second metal material, wherein the first electrode element (14) and/or the second electrode element (15) is embedded in the hose body (10) and each of the electrode elements (14, 15) is connected to the signal unit (17), wherein the electrode elements (14, 15) form a galvanic unit for generating a voltage detectable on the signal unit (17) during simultaneous contacting of the conveyed material (11).

A method of inspecting a pipe joint for use in a subsea pipeline and a method of manufacturing a pipe joint for use in a subsea pipeline employing said inspection method are disclosed, the inspection method comprising the steps of: receiving a pipe joint; measuring the ovality of the pipe joint to obtain ovality data; determining that the ovality data does not exceed a predetermined maximum pipe joint ovality value; and carrying out external pressure collapse tests on a ring cut from one end of the received pipe joint, resulting in data representative of the hydrostatic collapse pressure of said pipe joint for use in confirming that the pipe joint is suitable for its intended use.

The present invention provides a defect analysis device including: an excitation unit (107) that imparts vibrations of a plurality of frequencies to a fluid (110) flowing through a pipe (108); a first detector (106) that, when the excitation part (107) is imparting vibrations, detects vibrations emanating from the pipe (108); and a signal processing unit (101) that extracts a feature quantity from a vibration waveform acquired by the first detector (106), and uses the extracted feature quantity to estimate the extent of a defect formed in the pipe (108).

A sensor system provides measurement of building interstory drift based on a laser beam impinging on a discrete diode sensor array. The diode sensor array determines the location at which a projected laser bean strikes the array, which provides a direct measurement of interstory drift. The diode sensor array is a two dimensional array of discrete diodes that allow the location of an impinging laser beam to be very accurately tracked as the beam moves back-and-forth across the diode array. Local rotations of the laser source that result from rotations of structural members (e.g. floor beam rotation) are appropriately corrected for. This allows accurate, dynamic measurements of the interstory drift between two floor levels of a shaking building.

A method of wear detection of a coated belt or rope includes connecting a wear detection unit to one or more monitoring strands and/or cords of a coated belt or rope. The coated belt or rope includes one or more baseline strands and/or cords exhibiting a first change in electrical resistance as a function of bending cycles of the belt or rope and one or more monitoring strands and/or cords exhibiting a second change in electrical resistance as a function of bending cycles of the belt or rope, greater than the first change in electrical resistance. An electrical resistance of the one or more monitoring strands and/or cords is measured via the wear detection unit. Using at least the measured electrical resistance of the one or more monitoring strands and/or cords, a wear condition of the belt or rope is determined.

A building settling detection system having at least one sensor configured between a guide rail track of an elevator system and a pit of the elevator system and a controller in communication with the at least one sensor, the controller configured to monitor an output of the at least one sensor and transmit a notification to a remote location when the output of the at least one sensor meets or exceeds a predetermined threshold indicating that the predetermined threshold is met or exceeded.

A method of processing a signal is disclosed. The method comprises receiving a signal obtained from measuring a structure under a given set of environmental and/or operational conditions, the signal comprising a set of amplitude values which depend on position in the signal and adjusting the amplitude value each of at least two of the amplitude values independently according to the position of the amplitude value in the signal and according to the given environmental and/or operational conditions.

A system for nondestructive evaluation of railroad rails, includes a carriage including a plurality of wheels movably supporting the carriage on the rails, a source of vibration mounted on the carriage and connected to transmit vibrations of a preselected frequency to test regions on the rails through the wheels to cause an increase in temperature of the rails at locations of flaws in the test regions, an infrared detector for recording thermal images of the test regions to detect the increase in temperature of the location of the flaws, a controller connected to actuate the infrared detector to record the thermal images of the vibrations impacting the test regions, and store the thermal images recorded by the infrared detector.

System and method for monitoring the condition of electricity conductor support systems, i.e. towers, in a power network distribution system employing a tower structure integrity sensor assemblage. The system allows for identifying particular portions of a structural system for maintenance attention. The tower sensors allow identification of structural failures of electricity transmission towers.