A method for forming a hole within a ceramic matrix composite component includes forming a first core portion for a ceramic matrix composite component; embedding a hollow member into the first core portion at a desired location; wrapping the first core portion with a first ceramic matrix composite material; inserting a rod through the hollow member and into the first core portion; removing the hollow member; assembling a second core portion to the first core portion such that the rod extends into the second core portion; and wrapping the first core portion and the second core portion with a second ceramic matrix composite material.

A method for forming a hole within a ceramic matrix composite component includes forming a first core portion for a ceramic matrix composite component; embedding a hollow member into the first core portion at a desired location; wrapping the first core portion with a first ceramic matrix composite material; inserting a rod through the hollow member and into the first core portion; removing the hollow member; assembling a second core portion to the first core portion such that the rod extends into the second core portion; and wrapping the first core portion and the second core portion with a second ceramic matrix composite material.

A method of processing a ceramic matrix composite (CMC) component includes extracting silicon from a surface region of the CMC component such that free silicon is present in the surface region at a reduced amount of about 5 vol. % or less. The extraction comprises contacting the surface region with a wicking medium comprising an element reactive with silicon. The extraction is carried out at an elevated temperature prior to assembling the CMC component with a metal component.

A method of processing a ceramic matrix composite (CMC) component includes extracting silicon from a surface region of the CMC component such that free silicon is present in the surface region at a reduced amount of about 5 vol. % or less. The extraction comprises contacting the surface region with a wicking medium comprising an element reactive with silicon. The extraction is carried out at an elevated temperature prior to assembling the CMC component with a metal component.

A panel insert is provided which is installed in a concrete wall form and secured at an intended location such that when the concrete is poured into the form and cured, the panel remains in place and through which holes or openings can be readily formed after the concrete wall has been constructed. The panel insert comprises a box or enclosure made of a suitable plastic or other material and having an interior filled with a structural and thermally insulative foam or other material. At least one gasketed flange is provided around the periphery of the enclosure which forms a watertight seal between the concrete and panel.

A panel insert is provided which is installed in a concrete wall form and secured at an intended location such that when the concrete is poured into the form and cured, the panel remains in place and through which holes or openings can be readily formed after the concrete wall has been constructed. The panel insert comprises a box or enclosure made of a suitable plastic or other material and having an interior filled with a structural and thermally insulative foam or other material. At least one gasketed flange is provided around the periphery of the enclosure which forms a watertight seal between the concrete and panel.

A method of processing a ceramic matrix composite (CMC) component includes extracting silicon from a surface region of the CMC component such that free silicon is present in the surface region at a reduced amount of about 5 vol. % or less. The extraction comprises contacting the surface region with a wicking medium comprising an element reactive with silicon. The extraction is carried out at an elevated temperature prior to assembling the CMC component with a metal component.

An apparatus and method for creating openings in a material that solidifies is disclosed. The apparatus comprises a rigid board and at least one rigid retainer plate. The rigid retainer plate comprises at least one buoyancy plate to resist the buoyant force of the material that solidifies, at least one hydrostatic plate to resist the hydrostatic force of the material that solidifies, and a retainer tie. The rigid board further comprises retainer plate slots configured to accept the retainer plates. When the apparatus is in use, the retainer plates are inserted into the retainer plate slots and the retainer ties are coupled to formwork panels. The material that solidifies is then poured into the gap between the formwork panels. Once the material is solidified, the formwork panels are removed and the apparatus can be either reused or thrown out. The apparatus may be used with any material that solidifies.

A reusable form for creating conduit paths in concrete slabs is described. The form comprises a flexible tube that is positioned prior to pouring a concrete slab. The form includes a keep to keep material out of the hole formed by the form. The form also includes a key structure to permit easy removal of the form once the concrete is set. The system further includes a sighting device to permit rapid and precise alignment for placement of a form when forming conduits in a multi-level building. An accessory is also provided permitting filling in the opening created by the form once wiring, piping and other objects have been installed within the conduit.

A reusable form for creating conduit paths in concrete slabs is described. The form comprises a flexible tube that is positioned prior to pouring a concrete slab. The form includes a keep to keep material out of the hole formed by the form. The form also includes a key structure to permit easy removal of the form once the concrete is set. The system further includes a sighting device to permit rapid and precise alignment for placement of a form when forming conduits in a multi-level building. An accessory is also provided permitting filling in the opening created by the form once wiring, piping and other objects have been installed within the conduit.