Accession Number : ADA498352


Title :   Fatigue Testing of Maglev-Hybrid Box Beam


Descriptive Note : Final rept. 23 May 2006-14 Sep 2008


Corporate Author : LEHIGH UNIV BETHLEHEM PA


Personal Author(s) : Grenestedt, Joachim L ; Sause, Richard


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a498352.pdf


Report Date : 02 Mar 2009


Pagination or Media Count : 12


Abstract : The project concerned fatigue testing and numerical evaluation of a steel/composite hybrid girder. The girder was previously built under collaboration between Maglev Inc. and Lehigh University. The girder was instrumented with strain gages and LVDTs to monitor strains and deflections. A test setup with bottom supports and towers for mounting two or three hydraulic actuators was installed in the ATLSS test lab. The girder was fatigue tested for over 300,000 cycles at loads up to 120% of design load. There was extensive cracking in the steel structure, but only minor damage in the composite panels towards the very end of the test.


Descriptors :   *NAVAL VESSELS , *GIRDERS , *SHIP HULLS , *BOX BEAMS , *FATIGUE TESTS(MECHANICS) , STEEL , TOWERS , HYBRID SYSTEMS , ACTUATORS , TRUSSES , WELDED JOINTS , ADHESIVE BONDING , SANDWICH PANELS , CORRUGATING , DEFLECTION , NUMERICAL ANALYSIS , CRACKING(FRACTURING) , COMPOSITE MATERIALS , TEST AND EVALUATION , SUPPORTS


Subject Categories : Marine Engineering
      Structural Engineering and Building Technology
      Test Facilities, Equipment and Methods


Distribution Statement : APPROVED FOR PUBLIC RELEASE