Composite bonded structure is a prevalent portion of today’s aircraft structure. Adequate bond integrity critical aspect fabrication and service, especially since many structural bonds are for flight safety. Over the last decade, non-destructive evaluation techniques have improved but still cannot detect structurally weak that exhibits full adherend/adhesive contact. The result expensive time-c...

This study was undertaken to assess the frequency of decreased bone mineral density and its risk factors as well as its impact on the quality of life during childhood among hemophiliac patients. Materials and Methods: Thirty seven children with severe hemophilia A and B, referred to Mofid Children’s Hospital during 2010, were selected. For all patients the joint score, body mass indexes, bone...

High-precision position detection of joint and status monitoring speed reduction gearbox (SRG) are two key technologies in the research development selective compliant assembly robot arm (SCARA). The existing schemes have some problems, such as large occupation space, high cost, complex implementation, lack monitoring, etc. Therefore, first, order to get accurate information when SCARA is power...

The Shewhart X¯- and S-charts are most commonly used for monitoring the process mean variability based on assumption of normality. However, many distributions may follow a positively skewed distribution, such as lognormal distribution. In this study, we discuss construction three combined jointly standard deviation. simulation results show that more effective when distribution is skewed. A real...