Results 271 to 280 of about 1,565,682 (342)

Robust process capability index tracking for process qualification

Proceedings of the 2015 International Conference on Microelectronic Test Structures, 2015
This paper presents a robust process qualification and monitoring procedure based on the recently developed YAT and YWL process capability indices. Combined with appropriate test structures and measurements the procedure enables rapid process maturity evaluation and on-going loop closure of manufacturing to process specifications.
Cong Gu, Colin C. McAndrew
openaire   +1 more source

Bayesian and classical inference of the process capability index under progressive type-II censoring scheme

Physica Scripta
This article uses the maximum likelihood technique, the bootstrap method, and the Markov chain Monte Carlo method to estimate the process capability index (C py ) for the generalised inverted exponential distribution.
Mustafa M Hasaballah, Yusra A. Tashkandy, Oluwafemi Samson Balogun, M. E. Bakr   +3 more
semanticscholar   +1 more source

Combined attri-vari inspection policy for resubmitted lots based on the process capability index

Communications in statistics. Simulation and computation, 2020
In this paper, an attri-vari inspection policy for the resubmitted lots based on the process capability index Cpk is proposed. The proposed sampling plan comprises of both attribute and variables inspections for the resubmitted lots using single sampling
S. Balamurali
semanticscholar   +1 more source

Process capability index: bivariate normal distribution

Communications in Statistics - Theory and Methods, 1991
In this paper we examine the behaviour of bivariate generalizations of the process capability indices Cp, CPU and CPL. It is shown that when the characteristics of interest have a bivariate normal distribution the distribution of is related to the bivariate χ2 distribution and that of is related to the bivariate noncentral t distribution.
Subrahmaniam Kocherlakota, Kathleen Kocherlakota   +1 more
openaire   +1 more source

Distributions of the Estimated Process Capability Index Cpk

Economic Quality Control, 2003
Summary: Process capability indices \(C_{p}\) and \(C_{pk}\) have been widely used to provide numerical measures on process potential and process performance. While \(C_{p}\) measures process variation relative to the specification tolerance, which only reflects process potential, \(C_{pk}\) considers process variation as well as process centering ...
Lin, G. H., Pearn, W. L.
openaire   +1 more source

Another Look at the Process Capability Index

Quality and Reliability Engineering International, 2006
Process capability indices (PCIs) have been widely used in manufacturing industries. In this paper, we take a very specific view that a proper value of the process capacity index (PCI) represents the true yield of the process. Following this logic, a universal PCI, Cy, is proposed and derived.
Min-Te Chao, Dennis K. J. Lin
openaire   +1 more source

Performance analysis in WEDM of titanium grade 6 through process capability index

, 2020
The purpose of this study aims to obtain excellent products, consistent investigation and manufacturing process control which are the preconditions that organizations have to consider.
H. Majumder, K. Maity
semanticscholar   +1 more source

Hypothesis testing of process capability index Cpk from the perspective of generalized fiducial inference

Quality and Reliability Engineering International, 2020
Hypothesis testing of Cpk is an essential part for decision making on process capability. The difficulty to test the hypothesis of Cpk is the complexity of the natural estimator Ĉpk distribution even under the normal distribution.
Fanbing Meng, Jun Yang, Shuo Huang
semanticscholar   +1 more source

ESTIMATION OF PROCESS CAPABILITY INDEX FOR CONCENTRICITY

Quality Engineering, 1997
Concentricity of any hollow circular or cylindrical job is a critical quality characteristic whose variation pattern can be explained by an extreme value distribution. Estimation of the process capability index is a prerequisite for control and improvem..
Ashok Sarkar, Surajit Pal
openaire   +1 more source

New dynamic reliability assessment method based on process capability index and fault importance index

, 2020
Accurate and effective equipment state assessment can help us to keep abreast of equipment operation reliability in performing emergency management of equipment faults.
Guangzhong Liu, Wanhong Li
semanticscholar   +1 more source