Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Aditya Narayanan summary slides 2017

70 views

Published on

Personal research summary 2017

Published in: Engineering
  • Be the first to comment

  • Be the first to like this

Aditya Narayanan summary slides 2017

  1. 1. Effect of Residual Stresses on the Failure of Laser Cladded Rail Dr Aditya Narayanan, Research Associate 21 September 2016 1
  2. 2. Objectives • Measure residual stresses after laser cladding • Determine the effect of residual stresses on fracture of rail • Develop FE model to simulate laser cladding process and predict how parameters influence stress state 2 Rail joint Cladded rail Above: Section of cladded rail near an insulated rail joint; joint consists of electrical insulator and is used for signalling (ruler shown for scale)
  3. 3. Residual Stresses in Rail Samples 3 Left: 0.5 m length of cladded rail (martensitic clad on rail steel) set up for neutron diffraction on translatable stage Above: Schematic of strain directions obtained using this experimental arrangement Rail Stage Neutron detectors Incident beam (thick arrow) εzz εyy Diffracted beam (thin arrows) Detector

×