Abstract: An astragal (10; 310; 410; 510) for attachment between a movable closure member (11; 111; 311; 411; 611) and a fixed surface having a sealing device and having an electrical switching device to signal engagement with an object including a retainer (15; 115; 315; 415; 615) secured to one of the closure member and the fixed surface, an elongate arcuate sealing member (30; 330; 430; 530; 630; 730; 830; 930) for engaging the other of the closure member and the fixed surface when in close proximity, the arcuate sealing member selectively affixed to the retainer, a resilient carrier (45; 345; 445; 545; 645; 745; 850; 950) disposed within the arcuate sealing member, and at least one electrically conductive strip (46; 346; 447; 547; 651; 746; 846; 946) attached to the carrier in unobstructed facing relation to an electrically conductive contact (20; 120; 320; 448; 548; 620) and temporarily movable into engagement with the electrically conductive contact when an object displaces the arcuate sealing member and the resi

Abstract: A fixture is provided for testing thin sheet metal specimens to evaluate hot-cracking sensitivity for determining metal weldability on a heat-to-heat basis or through varying welding parameters. A test specimen is stressed in a first direction with a load selectively adjustable over a wide range and then a weldment is passed along over the specimen in a direction transverse to the direction of strain to evaluate the hot-cracking characteristics of the sheet metal which are indicative of the weldability of the metal. The fixture provides evaluations of hot-cracking sensitivity for determining metal weldability in a highly reproducible manner with minimum human error.