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Title: Real-Time Measurement of Machine Efficiency during Inertia Friction Welding.

Abstract

Process efficiency is a crucial parameter for inertia friction welding (IFW) that is largely unknown at the present time. A new method has been developed to determine the transient profile of the IFW process efficiency by comparing the workpiece torque used to heat and deform the joint region to the total torque. Particularly, the former is measured by a torque load cell attached to the non-rotating workpiece while the latter is calculated from the deceleration rate of flywheel rotation. The experimentally-measured process efficiency for IFW of AISI 1018 steel rods is validated independently by the upset length estimated from an analytical equation of heat balance and the flash profile calculated from a finite element based thermal stress model. The transient behaviors of torque and efficiency during IFW are discussed based on the energy loss to machine bearings and the bond formation at the joint interface.

Authors:
 [1];  [2];  [2];  [2];  [1]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1429727
Report Number(s):
SAND-2017-13798J
659676
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Program Document
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Tung, Daniel Joseph, Mahaffey, David, Senkov, Oleg, Semiatin, Sheldon, and Zhang, Wei. Real-Time Measurement of Machine Efficiency during Inertia Friction Welding.. United States: N. p., 2017. Web.
Tung, Daniel Joseph, Mahaffey, David, Senkov, Oleg, Semiatin, Sheldon, & Zhang, Wei. Real-Time Measurement of Machine Efficiency during Inertia Friction Welding.. United States.
Tung, Daniel Joseph, Mahaffey, David, Senkov, Oleg, Semiatin, Sheldon, and Zhang, Wei. Fri . "Real-Time Measurement of Machine Efficiency during Inertia Friction Welding.". United States. doi:.
@article{osti_1429727,
title = {Real-Time Measurement of Machine Efficiency during Inertia Friction Welding.},
author = {Tung, Daniel Joseph and Mahaffey, David and Senkov, Oleg and Semiatin, Sheldon and Zhang, Wei},
abstractNote = {Process efficiency is a crucial parameter for inertia friction welding (IFW) that is largely unknown at the present time. A new method has been developed to determine the transient profile of the IFW process efficiency by comparing the workpiece torque used to heat and deform the joint region to the total torque. Particularly, the former is measured by a torque load cell attached to the non-rotating workpiece while the latter is calculated from the deceleration rate of flywheel rotation. The experimentally-measured process efficiency for IFW of AISI 1018 steel rods is validated independently by the upset length estimated from an analytical equation of heat balance and the flash profile calculated from a finite element based thermal stress model. The transient behaviors of torque and efficiency during IFW are discussed based on the energy loss to machine bearings and the bond formation at the joint interface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 2017},
month = {Fri Dec 01 00:00:00 EST 2017}
}

Program Document:
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