This paper presents design, construction and control of a quadruped robot, capable to maneuver on vertical surfaces. A nondestructive system integrated with the robot enables location and tracking of rebars in concrete structures. This paper illustrates robot manipulation in the kinematic approach and practical application of the platform dedicated for nondestructive testing. Streszczenie. W ar...

In the modern motorcar production, more than 300 deep-drawn sheet metal parts are joined together by more than 3,000 spot welds on each car body. To check the spot welds within the framework of the quality assurance, different nondestructive test methods are available in addition to the destructive methods (tear down test, metallographic inspection): the chipping test and the ultrasonic test, w...

Nondestructive quantum measurements are central for physics applications ranging from sensing to computing and communication. Employing the toolbox of cavity electrodynamics, we here concatenate two identical nondestructive photon detectors repeatedly detect track a single propagating through $60\,\mathrm{m}$ long optical fiber. By demonstrating that combined signal-to-noise ratio surpasses eac...

In this contribution the Optical Coherence Tomography (OCT), as a novel tool for non-invasive structural imaging of selected objects of cultural heritage, will be reviewed. This technique relies on multispectral interference of infrared light and therefore is well suited for investigation of transparent and semi-transparent structures. The technique originates from medical imaging and has been ...

Most PWRs have penetrations in the RPV lower heads for in-core nuclear instrumentation. These generally are made of nickel-based Inconel Alloy 600. Weld materials typically 82/182. Operating conditions PWR plants causing alloys cracking through a process called primary water stress corrosion (PWSCC). In 2003, licensee South Texas Project Unit 1 (STP-1) identified apparent boron deposits on head...

SURFACE REPLICATION is a welldeveloped electron microscopy sample preparation technique that can be used to conduct in situ measurements of the microstructure of components. The in situ determination of microstructural deterioration and damage of materials subjected to various environments is an objective of any nondestructive evaluation (NDE) of structural components. The need to assess the co...

A concrete bridge over Interstate 70 east of Denver, Colorado was impacted by a fork lift being transported by a truck moving at a speed of approximately 75 mph. The forklift impacted the east face of the prestressed concrete I-beam bridge girder, resulting in severe cracking and concrete spalling on both sides of the eastmost girder. Polymer-modified repair mortar was used to repair spalled ar...

A method based on Fisher Information from sensitivity matrix is presented for sensor placement in nondestructive tests used for parameter estimation and structural model updating using sparse and noisy measurements. This method can be used for both static and modal nondestructive tests but in this paper sensor placement for only the static nondestructive data is presented. An error function tha...