1. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
Armature transmitting current I prescribed at one rail to the return rail, with induced magnetic field B between the rails out of plane of page resulting in Lorentz force F accelerating conducting armature

2. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
(a) Assembly of aluminum armature (12.33 mm armature width into page) with platform insert of tungsten to support nylon bore rider and weight armature to 19 g and (b) armature/platform retrieved from catch tank following launch showing rectangular worn contact patch over leg surface

3. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
(a) Copper rails showing the start location and initial 0.2 m distance traversed and deposited upon by an aluminum armature; (b) normalized EDXS intensity of aluminum deposit and underlying copper rail as a function of increasing rail position over which deposit diminishes; and (c) voltage as a function of time during launch of aluminum armature on copper rails indicating transition by t = 2000 μs

4. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
Thermal model of stationary rail at far-field temperature To as it is traversed by high-speed (V) armature contacting it over a length 2b. A flux  q˙r partitioned into the rail from the total interfacial power results in a maximum surface temperature Tm at the trailing edge of the high-speed contact.

5. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
(a) Armature wear volume averaged from two repeat tests for each of four combinations of armature (Al or Mo) and rail (Cu or stainless steel) materials and (b) armature wear volume as a function of AMR

6. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
Normalized EDXS intensity of armature deposit and underlying rail as a function of increasing rail position at various armature/rail combinations: (a) aluminum/copper; (b) aluminum/304 stainless steel; (c) molybdenum/copper; and (d) molybdenum/304 stainless steel

7. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
Voltage as a function of time at four combinations of armature (Al or Mo) and rail (Cu or stainless steel) materials

8. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
Prescribed current as a function of time at four combinations of armature (Al or Mo) and rail (Cu or stainless steel) materials

9. Date of download: 10/28/2017
Copyright © ASME. All rights reserved.
From: Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
J. Tribol. 2016;138(4): doi: /
Figure Legend:
Al armature with Mo cladding attached over legs (a) as assembled, (b) as retrieved post-launch from catch tank, and (c) voltage as a function of time for Mo-clad Al armature on Cu rails, remaining lower than solid Mo armature while not transitioning like solid Al armature (Fig. 3(c))