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Full-Text Articles in Engineering

Fatigue Investigation Of Slit Rib-To-Floor Beam Connections In Steel Orthotropic Bridge Decks, Jayne Marks May 2018

Fatigue Investigation Of Slit Rib-To-Floor Beam Connections In Steel Orthotropic Bridge Decks, Jayne Marks

Theses and Dissertations

The steel orthotropic bridge deck (SOBD) is a bridge deck system which consists of longitudinal open or closed ribs that pass through transverse floor beams with a continuous steel deck plate on top. All of these components are joined using welded connections which can be costly to fabricate and prone to fatigue cracks. The rib-to-floor beam (RFB) connection in an SOBD is labor intensive and fatigue sensitive. In the past, the RFB connection has either been a fully fitted connection or a connection with an extended cut-out which is larger than the opening in the floor beam web for the ...


Experimental And Computational Investigation Of Composite Beam Response To Fire, Amy Kordosky Jan 2017

Experimental And Computational Investigation Of Composite Beam Response To Fire, Amy Kordosky

Theses and Dissertations

This thesis presents three experimental studies on composite floor beams in fire that were performed in the Lehigh University ATLSS Furnace. The experiments include a predesigned W8x10 beam with limited existing damage subject to a realistic parametric fire curve with a decay phase, and two W12x26 beams – one bare steel and one insulated with a spray on fire resistant material - designed and tested with an E119 standard fire curve. The complete design and record of the tests are provided, including data on specimen temperatures and deflections.SAFIR 2016 was used to model the systems thermal and structural behavior at various ...


Fundamental Studies Of Phase Transformations And Mechanical Properties In The Heat Affected Zone Of 10 Wt% Nickel Steel, Erin Barrick Jan 2016

Fundamental Studies Of Phase Transformations And Mechanical Properties In The Heat Affected Zone Of 10 Wt% Nickel Steel, Erin Barrick

Theses and Dissertations

United States naval applications require the use of steels with high strength and resistance to fracture at low temperatures to provide good ballistic properties. In recent years, 10 wt% Ni steel has been developed with strength and toughness values exceeding those of steels currently used, and is now being considered as a candidate material to replace existing high-strength, low alloy steels. This steel has excellent toughness from the mechanically induced transformation of interlath austenite films to martensite. These austenite films are formed via a carefully developed quenching, lamellarizing, and tempering heat treatment. However, before 10 wt% Ni steel can be ...


Microstructural Evolution And Mechanical Properties Of Fusion Welds And Simulated Heat-Affected Zones In An Iron-Copper Based Multi-Component Steel, Jeffrey David Farren Jan 2012

Microstructural Evolution And Mechanical Properties Of Fusion Welds And Simulated Heat-Affected Zones In An Iron-Copper Based Multi-Component Steel, Jeffrey David Farren

Theses and Dissertations

No abstract provided.


Probabilistic Earthquake Structural Damage Assessment Of Steel Special Cbf And Steel Self-Centering Cbf Buildings, Gulce Akbas Jan 2012

Probabilistic Earthquake Structural Damage Assessment Of Steel Special Cbf And Steel Self-Centering Cbf Buildings, Gulce Akbas

Theses and Dissertations

No abstract provided.


Fracture Toughness Of Nucu-140 Simulated Heat Affected Zones, Brett Leister Jan 2011

Fracture Toughness Of Nucu-140 Simulated Heat Affected Zones, Brett Leister

Theses and Dissertations

No abstract provided.


Fracture Behavior In The Kinzel Test For Weldability, William James Murphy Jan 1955

Fracture Behavior In The Kinzel Test For Weldability, William James Murphy

Theses and Dissertations

No abstract provided.


The Microscope As An Aid In The Heat Treatment Of Steel, Augustine Edward Greene Jan 1906

The Microscope As An Aid In The Heat Treatment Of Steel, Augustine Edward Greene

Undergraduate Honors Theses and Capstone Projects

The gradual but certain displacement of wrought iron for manufacturing purposes by steel of various kinds has compelled manufacturers to more closely study the methods of hardening, tempering, and annealing. This is due to the greater demands of the consumer for strength and durability, and uniformity in texture and composition of the material as a finished product, whether it be steel rails, structural shapes, shafting, our wheels or gun parts. The old methods of steel treatment are slow and very uncertain in results and frequently valuable amounts of material, purchased according to the most rigid specifications as to the composition ...