Characterization of cast stainless steel weld pools by using ball indentation technique (2009)
Das, Goutam, Das, Mousumi, Sinha, S, Gupta, K K, Chakravarty, S, Ray, Ashok K
Ball indentation technique (BIT) was used to characterize two weld pools of cast stainless steel. Yield strength, ultimate tensile strength, strength coefficient, strain hardening exponent and...
Singh, Raghuvir, Das, Goutam, Singh, P K, Chattoraj, I
Present investigations were focused on low-temperature sensitization (LTS) behavior of 304LN stainless steels considered from pipes of two different thicknesses. The specimens for the present study...
Ray, Ashok K, Roy, Nilima, Kar, Abhijit, Ray, Ajoy K, Bose, S C, Das, Goutam, ...
This paper highlights some of the results obtained while studying Ni20Co18Cr12.5Al0.6Y (NiCoCrAlY) type metallic bond-coat properties of a thermal-barrier coated (TBC), AE-437A Ni base superalloy...
Effect of austempering treatment on microstructure and mechanical properties of high-Si steel (2009)
Mandal, D, Ghosh, M, Pal, J, De, P K, Ghosh Chowdhury, S, Das, S K, ...
In the present investigation, the influence of austempering treatment on the microstructure and mechanical properties of silicon alloyed cast steel has been evaluated. The experimental results show...
Investigation on the failure of air compressor (2009)
Sivaprasad, S, Narasaiah, N, Das, S K, Das, Goutam, Tarafder, S, Gupta, K K, ...
The cause for the failure of an air compressor has been investigated. It was found that a pre-existing fatigue crack was present at the root of the impeller blade. Transients and unsteady operation...
Murthy, G V S, Ghosh, Sabita, Das, Mousumi, Das, Goutam, Ghosh, R N
Microstructure of a crystalline material is a key factor in its technological applications as it determines a wide variety of properties including mechanical strength, toughness, corrosion resistance...
Ghosh, Sabita, Pal, T K, Mukherjee, Surojit, Das, Goutam, Ghosh, Sukomal
Ball indentation technique (BIT) is employed to study the effect of post-weld heat treatment on the mechanical properties of a high strength low alloy (HSLA) steel and subsequently on the quality of...
Microhydrogel-Mediated Synthesis of Sintered Hydroxyapatite Granules (2008)
Sinha, A, Nayar, S, Kar, Abhijit, Gunjan, M K, Mahato, B, Das, Goutam, ...
Synthesis of macroporous hydroxyapatite (HA) granules with a controlled microarchitecture has been demonstrated by following a polymer microhydrogel mediated synthesis process coupled with sintering....
Biomimetically synthesized polymer-hydroxyapatite sheet like nano-composite (2008)
Nayar, S, Pramanick, A K, Sharma, Binay Kumar, Das, Goutam, Ravi Kumar, B, Sinha, A
Biomimetic internal architecture is proving valuable for multi-tissue and structural tissue interface engineering. A biomimetic method developed for the in situ synthesis of hydroxyapatite in poly...
Venkataraman, R, Das, Goutam, Singh, S R, Ghosh, R N, Venkataraman, B, Krishnamurty, R
Plasma sprayed ceramic coatings invariably form with at least 5–10% porosity due to inherent deficiency in the spray technology. On many occasions, the volume fraction, size and distribution of the...
Poly(vinyl alcohol)–hydroxyapatite biomimetic scaffold for tissue regeneration (2007)
Sinha, A, Das, Goutam, Sharma, Binay Kumar, Roy, Raja Prabahan, Pramanick, A K, Nayar, S
Hydroxyapatite–poly(vinyl alcohol) composite blocks were produced by freeze–thawing in situ synthesized hybrid suspension. Matrix mediated precipitation of hydroxyapatite particles in the...
Failure analysis of a high mast lamp post (2006)
Das, Goutam, Chakravarty, S, Dutta, A K, Das, Swapan K, Gupta, K K, Ghosh, R N
The failure of a high mast lamp post was analysed. The mast failed by bending at a position just opposite to the maintenance pocket. It appears that the failure was due to wind load, which the...
Ray, Ashok K, Goswami, B, Singh, Mahendra Prasad, Das, D K, Roy, Nilima, Ravi Kumar, B, ...
This paper deals with characterization of a thermal barrier coated (TBC) Supeni 263 super alloy, mostly employed for manufacturing combustion chamber of aero turbines, with respect to microstructure,...
Venkateswarlu, K, Das, Goutam, Pramanick, A K, Xu, Cheng, Langdon, T G
As-cast Al–Si alloys exhibit excellent mechanical properties but these properties may be further improved through processing by equal-channel angular pressing (ECAP). In this investigation,...
Das, Goutam, Ghosh, Sabita, Bose, S C, Ghosh, Sukomal
Ball indentation technique (BIT) has been used to explore its usefulness in revealing the effect of high temperature exposure on mechanical properties of a gas turbine (GT) blade of Ni base super...
Das, Goutam, Ghosh, Sabita, Ghosh, Sukomal
The present studies deal with the evaluation of mechanical properties through Ball Indentation Technique (BIT) for En steel, having varying microstructure due to specific heat treatment imparted....
Das, Goutam, Ghosh, Sabita, Ghosh, Sukomal, Ghosh, R N
The ball indentation technique (BIT) has been used to classify various engineering materials on the basis of observed pile-up/sink-in in materials, surrounding the indentation. In respect of revealed...
Microstructure, tensile strength and wear behaviour of Al–Sc alloy (2004)
Venkateswarlu, K, Pathak, L C, Ray, Ajoy K, Das, Goutam, Verma, P K, Kumar, Manoj, ...
A systematic study on the behaviour of commercial pure Al with the addition of scandium (Sc) was carried out and the effects of Sc addition on tensile and wear behaviour were investigated. The Sc...
Failure of a swing pinion shaft of a dragline (2004)
Ranganath, V R, Das, Goutam, Tarafder, S, Das, Swapan K
The causes of failure of a swing pinion shaft of a coal handling dragline have been investigated in the present work. Along with the failed shaft, a small piece of material from the tooth of another...
Failure of connecting pins of a compressor disc in an aero engine (2004)
Ray, Ashok K, Das, Goutam, Ranganath, V R, Goswami, B, Ghosh, R N
This paper describes the failure analysis of pins connecting the second and third stage compressor discs in an aero-engine that had failed after 46,000 h of service. The investigation included...
Failure analysis of coal pulverizer mill shaft (2003)
Parida, N, Tarafder, S, Das, Swapan K, Kumar, P, Das, Goutam, Ranganath, V R, ...
Failure of a ball and race type coal pulverizer mill shaft has been analysed. It was found that the shaft, made of EN 25 steel, failed by fatigue. The fatigue cracks originated from the keyway area,...
Fatigue failure of a boiler feed pump rotor shaft (2003)
Das, Goutam, Ray, Ashok K, Ghosh, Sabita, Das, Swapan K, Bhattacharya, D K
This paper deals with a detailed failure investigation of a rotor shaft in a boiler feed pump of a thermal power plant. The investigation mainly included chemical analysis, microscopy, fractography,...
Investigation of sub-surface cracks in continuous cast billets (2003)
Das, Goutam, Ghosh, Sukomal, Ghosh Chowdhury, S, Ghosh, Sabita, Das, Swapan K, Bhattacharya, D K
Sub-surface cracks in the continuous cast product of steel were studied to understand the causes of such defects and to suggest remedial measures. Even after hot rolling the cracks were not welded....
Turbine blade failure in a thermal power plant (2003)
Das, Goutam, Ghosh Chowdhury, S, Ray, Ashok K, Das, Swapan K, Bhattacharya, D K
The failure of a LP (low pressure) turbine blade of a 220 MW thermal power plant is presented. The blade was made of martensitic stainless steel and the structure was tempered martensite. There was...
Failure of a super heater tube (2002)
Das, Goutam, Ghosh Chowdhury, S, Ray, Ashok K, Das, Swapan K, Bhattacharya, D K
The failure of two adjacent platen super heater tubes of a thermal power plant has been analysed. One tube fractured with a fish mouth opening and another thinned down considerably. A significant...
Cloning, Expression, Purification, and Immunocharacterization of Placental Protein-14 (1998)
Dutta, Binita, Mukhopadhyay, Debaditya, Roy, Nita, Das, Goutam, Karande, Anjali A
Human placental protein-14 (PP-14), a member of the lipocalin superfamily, shares homology at the level of the primary and secondary structures with bovine $\beta$-lactoglobulin. It is the most...
Cloning, Expression, Purification, and Immunocharacterization of Placental Protein-14 (1998)
Dutta, Binita, Mukhopadhyay, Debaditya, Roy, Nita, Das, Goutam, Karande, Anjali A
Human placental protein-14 (PP-14), a member of the lipocalin superfamily, shares homology at the level of the primary and secondary structures with bovine $\beta$-lactoglobulin. It is the most...
Thesis (Ph.D. in Chemistry) -- Graduate School of Arts and Sciences, University of Pennsylvania, 1992.