The goal of this work is to detect flaw formation in the wire-based directed energy deposition
(W-DED) process using in-situ sensor data. The W-DED studied in this work is analogous to …

The purpose of this paper is to provide an overview and our perspective of recent research
and applications of statistical process monitoring. The focus is on work done over the past …

We review methods for monitoring multivariate time-between-events (TBE) data. We present
some underlying complexities that have been overlooked in the literature. It is helpful to …

Monitoring coefficient of variation is one of the successful approaches to Statistical Process
Control (SPC) when the process mean and standard deviation are not constants. This paper …

Economic production quantity, maintenance policy, and statistical process monitoring are
three interrelated concepts in the optimization of production process, while they have usually …

In recent years, effective profile monitoring for discrete response variables, such as binary,
multinomial, ordinal or Poisson variables, has increasingly attracted interest of researchers …

Continuous surveillance of the ratio of population means of bivariate normal distributions is
a quality control issue worth of consideration in several manufacturing and service-oriented …

Continuous surveillance of the coefficient of variation is a quality control issue worthy of
consideration in several manufacturing and service‐oriented companies. In this paper, we …

In this paper, we propose a variable sampling interval Shewhart control chart to monitor the
coefficient of variation (CV) squared, denoted by VSI SH-γ 2. The new model overcomes the …

Customer complaints about a product or service can be evaluated using the sentiment
intensity (S) and time interval (T) of negative reviews. Previous control chart-based research …