Abstract: A panel assembly for use in a vehicle includes a first face sheet, a second face sheet, and a core layer disposed between the first and second face sheets. The core layer is defined by a base material along a first section of the panel assembly, and the core layer is defined by a honeycomb structure along a second section of the panel assembly. The first section and the second section are discrete, and the first section that includes the base material extends along a perimeter of the panel assembly.

Abstract: A clip system is configured to secure an insulation blanket to a frame. The clip system includes a first clamp member including an adjustment arm and a first engagement arm, and a second clamp member including a sleeve and a second engagement arm. The sleeve is configured to adjustably retain the adjustment arm to allow the first clamp member and the second clamp member to be moveably adjusted. The first engagement arm and the second engagement arm are configured to securely clamp portions of the insulation blanket and the frame therebetween.

Abstract: A clip system is configured to secure an insulation blanket to a frame. The clip system includes a first clamp member including an adjustment arm and a first engagement arm, and a second clamp member including a sleeve and a second engagement arm. The sleeve is configured to adjustably retain the adjustment arm to allow the first clamp member and the second clamp member to be moveably adjusted. The first engagement arm and the second engagement arm are configured to securely clamp portions of the insulation blanket and the frame therebetween.

Abstract: A tray having an L shaped upper wall, side panels attached to the sides of the upper wall, inner panels attached to the upper wall, locking tabs on the lower edges of the inner panels, and a bottom wall having locking apertures which accommodate the locking tabs.

Abstract: A tray having an L shaped upper wall, side panels attached to the sides of the upper wall, inner panels attached to the upper wall, locking tabs on the lower edges of the inner panels, and a bottom wall having locking apertures which accommodate the locking tabs.

Abstract: A multi-beam heterodyne vibrometer for analyzing vibration of an object includes an optical system and a combining element. The optical system generates a plurality of object beams and a plurality of reference beams where one of the plurality of beams has a frequency that is shifted from a frequency of the other plurality of beams. The optical system focuses each of the plurality of object beams on the object and transmits the plurality of focused object beams to the object. A portion of each of the plurality of focused object beams is reflected off of a surface of the object as a modulated object beam. The optical system collects the modulated object beams. The combining element combines each of the modulated object beams with a respective one of the reference beams into a plurality of beam pairs.

Abstract: A multi-beam laser Doppler vibrometer simultaneously measures velocity, displacement, and vibration history of multiple locations on an object. A beam of coherent light is split into an object beam and a reference beam. The object beam is divided into a plurality of object beams to simultaneously illuminate multiple locations on the object under inspection. The reference beam is frequency shifted and split into a corresponding plurality of frequency-shifted reference beams. A portion of each object beam is reflected by the object as a modulated object beam. The plurality of modulated object beams are collected and respectively mixed with the plurality of frequency-shifted reference beams to provide a plurality of beam pairs. Each beam pair may be focused onto a photodetector or an optical fiber connected to a photodetector.

Abstract: A multi-beam laser Doppler vibrometer simultaneously measures velocity, displacement, and vibration history of multiple locations on an object. A beam of coherent light is split into an object beam and a reference beam. The object beam is divided into a plurality of object beams to simultaneously illuminate multiple locations on the object under inspection. The reference beam is frequency shifted and split into a corresponding plurality of frequency-shifted reference beams. A portion of each object beam is reflected by the object as a modulated object beam. The plurality of modulated object beams are collected and respectively mixed with the plurality of frequency-shifted reference beams to provide a plurality of beam pairs. Each beam pair may be focused onto a photodetector or an optical fiber connected to a photodetector.