Your Selections

Quality control
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

 
new

Aerospace Series - Quality Management Systems - Nonconformity Data Definition and Documentation

G-14 Americas Aerospace Quality Standards Committee (AAQSC)
  • Aerospace Standard
  • AS9131D
  • Current
Published 2019-05-31 by SAE International in United States

This standard defines the common nonconformity data definition and documentation that shall be exchanged between an internal/external supplier or sub-tier supplier, and the customer when informing about a nonconformity requiring formal decision. The requirements are applicable, partly or totally, when reporting a product nonconformity to the owner or operator, as user of the end item (e.g., engine, aircraft, spacecraft, helicopter), if specified by contract.

 

Integrating a Proactive Quality Control Concept into Machining Operation of a Crankshaft Manufacturing Process

FCA US LLC-Loda Bazzi
Published 2019-04-02 by SAE International in United States
Competition in the manufacturing industry is ever increasingly intense. Manufacturing organizations that want to grow and prosper must embrace a discipline of constant improvement. Their engineering departments are tasked with improving existing manufacturing processes in terms of quality and throughput, which is vital to competing on a global scale. Manufacturers strive to utilize technologies to extract efficiencies from their existing processes. Reducing scrap and rework is the paramount goal in increasing a processes’ efficiency. The foundation of this study is to analyze a production line to determine the quality status throughout the manufacturing process. The intention is to react to process instability before the production becomes non-compliant (scrap/rework) which will significantly improve productivity.By incorporating the proposed technology into the production process, the desired achievement will be to spot process variables at the earliest stages so that counter measures can be taken to stabilize the process before production drifts into non-compliance. Furthermore, the technology will communicate with machining operations to initiate counter measures such as program offsets, tool changes and wheel dressings. The main goal of…
Datasets icon
Annotation icon
 

Effects of Nitrided and Chrome Plated Die Surface Roughness on Friction in Bending Under Tension

United States Steel Corporation-Hua-Chu Shih
Published 2019-04-02 by SAE International in United States
Different die surface polish conditions result in a noticeable effect on material flow in stamping, which can lead to splitting, wrinkling, or other surface stretching issues associated with different friction conditions. These occurrences are not only limited to the non-coated dies, but also nitrided and chrome plated dies. To ensure quality control of the stamped parts, the die conditions corresponding to different polishing procedures need to be developed based on measurable parameters such as surface roughness (Ra). The intent of this study is to investigate the effects of nitrided and chrome plated die surface roughness on friction. The Bending-Under-Tension (BUT) test was conducted to simulate the stamping process due to the test’s versatility and flexibility in changing test parameters. The test involves moving sheet metal across a 3/8-inch diameter pin, which substitutes for a die surface. The pin can be modified by material, heat treatment, coating, and surface roughness. Pins were made of D6510 steel and heat treated to 54-58 HRC. Two different die polishing procedures were developed. The first is the progressive polishing procedure,…
Annotation icon
 

A Novel Method to Nondestructively Measure the Shear Edge Properties for Edge Cracking Evaluation with Advanced High Strength Steels

EWI Forming Center-Nikky Pathak, Jiahui Gu, Hyunok Kim
Published 2019-04-02 by SAE International in United States
Nondestructive Evaluation (NDE) techniques are widely used in the manufacturing industry to control the quality of materials or final products. In the automotive industry, eddy current (EC) testing is one of the most extensively used NDE techniques for automatic in-line inspection of ferrous materials such as advanced high strength steels (AHSS). In addition, shearing is a very common forming operation in the automotive industry. With the increase of shearing clearance, the sheared-edge experiences significant work-hardening that normally decreases the formability of the sheared edge. In this paper, a novel, real-time monitoring NDE method based on the EC sensor was developed to characterize variations in shear edge quality for a DP980 steel. The developed NDE method was applied to scan the edges sheared at various clearances between 5% and 25% of the material thickness. The signal received was correlated with pre-straining introduced during the shearing process at various clearances. Microhardness measurements were taken to compare the trends obtained from the NDE tool with the hardness values. To evaluate the edge formability, half-specimen dome testing (HSDT) was…
Annotation icon
 

Modeling, Control, and Adaptation for Shift Quality Control of Automatic Transmissions

H G M Automotive Electronics-Gilbert Cardwell
Ohio State University-Kirti Deo Mishra, Krishnaswamy Srinivasan
Published 2019-04-02 by SAE International in United States
The parameters determining shift quality control in automatic transmissions are determined as part of the calibration of the transmission control. The resulting control system typically has three components: feedforward control, where the control output is determined before a gearshift; feedback control, where the control output is determined during the gearshift based on sensed feedback; and learning control (adaptation), where the feedforward or feedback controller parameters are modified after the current gearshift has ended and before the next similar gearshift begins. Gearshifts involving the same ratio change are referred to here as similar gearshifts, though such gearshifts may involve differences in other variables such as vehicle speed or engine torque. In most automatic transmissions, gearshifts are controlled by hydraulic clutches, and operating conditions for these clutches may vary widely, requiring a dedicated transmission controller involving significant calibration effort.In the current work, novel model-based methods are used to accomplish feedforward control of gearshifts, involving offline calibration of fill and torque phase control parameters and learning control of the fill phase. Towards this end, a physics-based model of…
Annotation icon
 

Rapid Methodology to Simultaneous Quantification of Differ Antioxidants in Biodiesel Using Infrared Spectrometry and Multivariate Calibration

SAE International Journal of Fuels and Lubricants

National Institute of Metrology, Quality and Technology (INMETRO), Brazil-Luciano Nascimento Batista, Viviane F. Mello, Maurício G. Fonseca, Werickson F.C. Rocha
National Institute of Technology, Brazil-Claudete N. Kunigami
  • Journal Article
  • 04-12-01-0004
Published 2019-03-21 by SAE International in United States
The aim of this work is to quantify three different antioxidants in biodiesel - Santoflex, baynox, and tocopherol-using Middle Infrared (MIR) spectroscopy and chemometrics. For the construction of the models, 28 samples containing an antioxidant in the range of 0.1 to 500 mg/kg in biodiesel were used. We developed three models based on PLS 1 multivariate calibration method to quantify each of the three antioxidants separately and a model based on PLS 2 method to quantify simultaneously all the antioxidants. All models were compared to the values of root mean square error of calibration (RMSEC) and validation (RMSEP). For the baynox, santoflex, and tocopherol antioxidants quantification using PLS 1, the values of RMSEC and RMSEP were 37.2, 18.8, 9.0 mg/kg, and 26.7, 21.1, 68.6 mg/kg, respectively. In simultaneous determination of these three compounds (tocopherol, santoflex, and baynox) using PLS 2, the values observed by RMSEC and RMSEP were 7.7, 1.1, 7.3 mg/kg and 29.9, 4.2, 28.4 mg/kg, respectively. The methodology described here is fast, non-destructive, and can be used for quality control of antioxidants present…
Datasets icon
Annotation icon
 

Integrating Vision and Force Measurement into Medical Quality Control

  • Magazine Article
  • TBMG-34024
Published 2019-03-01 by Tech Briefs Media Group in United States

Vital for ensuring compliance to federal regulations, dimensional metrology systems facilitate critical measurement of medical parts, and force testing systems are used to verify and validate material compliance of medical devices and materials used in the production of medical devices. It is important to understand the options when selecting the right metrology system and/or force testing solution to meet the requirements of increasingly tighter accuracies, traceability, and the need for 100 percent inspection (see the sidebar, “Metrology System Selection Tips”).

 

AMS Index - January 2019

  • Index
  • AMSJAN-2019
Published 2019-02-20 by SAE International in United States

Aerospace Material Specifications Index is the most current listing of Aerospace Material Specifications, allowing users to locate each document quickly and easily.

 

AS9145: Requirements for Advanced Product Quality Planning and Production Part Approval

  • Professional Development
  • C1917
Published 2018-12-14

Production and continual improvement of safe and reliable products is key in the aviation, space and defense industries. Customer and regulatory requirements must not only be met, but they are typically expected to exceeded requirements. Due to globalization, the supply chain of this industry has been expanded to countries which were not part of it in the past and has complicated the achievement of requirements compliance and customer satisfaction. The IAQG has established and deployed the AS9145 Standard, as a step to help achieve these objectives. The hope is to also reduce costs worldwide by enforcing these activities through the regional representatives: Americas (AAQG), Europe (EAQG) and Asia/Pacific (APAQG).

 

Portable Acousto-Optic Spectrometers

  • Magazine Article
  • TBMG-33398
Published 2018-12-01 by Tech Briefs Media Group in United States

Spectrometers are widely used for applications such as chemical analysis, remote sensing, quality control, environmental monitoring, spaceborne measurements, and optical measurements. Most spectrometers are based on using dispersive elements such as prisms, gratings, or etalons. These spectrometers typically have moving parts that induce spurious readings due to vibrations, and have limited use due to their limited spectral range and resolution capabilities, which in turn limit their use when needed for portable field applications.