A 54-year-old man was admitted to our hospital due to exertional dyspnea. Chest radiography and CT revealed a large, thick-walled cavitary mass and a hydropneumothorax in the right lung in addition to a right hilar tumor and multiple small, thin-walled cavitary nodules (Picture 1). A transbronchial direct vision biopsy of the stenotic lesion of the right bronchus truncus intermedius revealed sq...

Thin-walled bars with an open cross-section are widely used in mechanical structures where weight and size control particularly required. Thus, this paper attempts to propose a theoretical model for predicting the properties of thin-walled bar under restrained torsion. Firstly, predictions shear stress, buckling normal secondary stress condition torsion was developed based on theory. Then, phys...

*DcparllllL'nt Ill" MechanICal and Aerospace Engineering. **Ocp;,Jftment of Civil Engineering. EVER 1. BARBERO,* ROBERTO LOPEZ-ANIDO** AND JULIO F. DAVALOS** Ui'st Virginia University Morgantown, WV 26506-6101 On the Mechanics of Thin-Walled Laminated Composite Beams sible to optinlize the material itself by choosing among a variety of resins, fiber systems, and fiber orientations. Changes in t...

One of the biggest challenges in Aviation industries is milling part features from prismatic blocks to part features with wall and floor thicknesses very similar to sheet metal assemblies. Much research has gone and is still going into machining processes of thin walled components and near net machining. This paper presents an overview in understanding the importance, criticalities and challeng...

AbstractIn this paper, we investigate effect of Fe–intermetallic compounds on plastic deformation of closed-cell composite Aluminum Foam as filler of thin-walled tubes. However, deformation of the Aluminum foam-filled thin-walled tubes as crushed-box will be presented in Part (II). Composite foams of AlSi7SiC3 and AlSi7SiC3-(Fe) as closed cell were synthesized by powder metallurgy foaming metho...

Components for engineering systems, such as gas turbines and jet engines operating at high temperature are usually produced in superalloys. The investment casting process is most widely used for manufacturing these components due to the ability of the process to produce parts with complex geometries to close dimensional tolerances. Other processing routes are less advantageous due to high mecha...

In this paper, a numerical analysis of in-cavity residual stress formation in the thin-walled parts of injection-moulded parts is presented by considering the residual stresses produced during the post-filling stage. Injection moulding of shallow thin-walled parts with a thickness of 0.7 mm was performed using lignocellulosic polymer composites (PP + 50 wt% wood), and the parts have been system...

Fig. 1 : Flair mrI image showing multiple coalescing thin walled cysts of varying sizes in right frontoparietal region. No calcification/solid component seen – consistent with hydatid cyst. A 21 year old male presented with history of headache since last 1 year. headache was moderate in intensity, intermittent and associated with pain in the eyes. No history of any fever, vomiting or seizures w...

Article history: Received 10.09.2012. Received in revised form 27.11.2012. Accepted 27.11.2012. The mold filling process of titanium alloy in the thin-walled and complicated cavities in hypergravity field is the subject of this paper. The obtained results indicate that the filling process of the melt in the thin-walled and complicated cavity at different mould rotational speeds is quite complex...

Thin-walled, open-ended, and well-aligned N-doped carbon nanotubes (CNTs) on the quartz slides were synthesized by using acetonitrile as carbon sources. As-obtained products possess large thin-walled index (TWI, defined as the ratio of inner diameter and wall thickness of a CNT). The effect of temperature on the growth of CNTs using acetonitrile as the carbon source was also investigated. It is...