сагсан бөмбөг

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Сагсан бөмбөг

Хичээлийн сэдэв

Сагсан бөмбөгийн дамжуулалтын
техник

Цээжний өмнөөс 2 гараар дамжуулах

Хичээлийн зорилго

Сагсан бөмбөгийн
дамжуулалтын
техникт сургах
Дасжуулалтын
техник
эзэмшүүлэх

Хичээлийн зорилт

Сагсан бөмбөгийн спортын
дамжуулалтыг техникүүдийг
ойлгож мэдэх

Сагсан бөмбөгийг барих дамжуулах
зэрэг энгийн чадвартай болох

Эхний хэсэг

Үндсэн хэсэг

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7 анги Биеийн тамирын хичээл "Сагсан бөмбөг"

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сагсан бөмбөг дамжуулалт 9 р анги

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сагсан бөмбөгийн дамжуулалт одноо багш

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буян эрдэнэ саг,волейбол хэрэг

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буян эрдэнэ саг,волейбол хэрэг

7 анги Биеийн тамирын хичээл "Сагсан бөмбөг"

7 анги Биеийн тамирын хичээл "Сагсан бөмбөг"

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сагсан бөмбөг

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Plan (pdf)

Introduction

Fabien Léonard

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

Additive layer manufacturing (ALM) has the potential to allow engineers almost complete freedom of design, with reduced material wastage and tooling costs, as well as shorter lead times on new designs. Unfortunately, most ALM processes invariably lead to porosity in the material deposited. The ALM process investigated here, selective electron beam melting (SEBM) of a powder bed, is no exception. Although it is known that defects do arise, with this process their dependence on the part geometry and the adopted build strategy has not been resolved. This is of key importance, because experiments have shown porosity can make an order of magnitude difference to the fatigue life of ALM components. X-ray computed tomography (CT) is an ideal tool for fully characterising in 3D the defects seen within ALM parts and has been applied here to study the effect of geometry and build direction on defects in titanium components. The most industrially, realistic worst case scenario was employed using an Arcam machine with a small raster pattern misalignment in order to study all the characteristic flow types possible in the SEBM process. For most of the test samples studied, XCT revealed large elongated pores (> 100 μm) to be present, which grew at a distance of around 1 mm from an edge, following the build direction. The position of this defect type correlated with the misaligned overlap region between the slow contour passes of the electron beam around the periphery of the sample outline and the hatching in fill region of a section. Smaller voids caused by gas entrapment were also resolved by XCT but they appeared to be mostly randomly distributed.

Assessment by X-ray CT of the effect of geometry and build direction on defec...

Assessment by X-ray CT of the effect of geometry and build direction on defec...

Assessment by X-ray CT of the effect of geometry and build direction on defec...

Fabien Léonard

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

Fracture behaviour and damage characterisation in composite impact panels by ...

Fracture behaviour and damage characterisation in composite impact panels by ...

Fracture behaviour and damage characterisation in composite impact panels by ...

Fabien Léonard

Seminario i y ii

Seminario i y ii

Seminario i y ii

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

This paper presents an investigation of voids in carbon fibre reinforced epoxy composites manufactured by resin film infusion using X-ray computed tomography (XCT). Two panels were investigated, one formed with a high viscosity resin, the other with a lower viscosity resin. The study focusses on the characterisation of the 3D distribution of voids in the panels. A new approach to the measurement of defect distribution demonstrated that in both panels, the voids were located close to the binder yarn. When the low viscosity resin was employed, the void distribution was more uniform throughout the panel thickness whereas for the high viscosity resin, the voids were mainly localised in the central part of the panel. Both qualitative and quantitative data were obtained giving extensive, three dimensional information which aids a better understanding of the manufacturing process.

3D Characterisation of Void Distribution in Resin Film Infused Composites

3D Characterisation of Void Distribution in Resin Film Infused Composites

3D Characterisation of Void Distribution in Resin Film Infused Composites

Fabien Léonard

Current and popular methods to value a corporate brand, although traditionally deemed as being adequate or “passable” for financial reporting purposes (hint: relief-from-royalty method to value trademarks), are far less than sufficient when it comes to measuring the full value of this intangible asset. The Residual Contribution Method for valuing corporate brands is designed to minimize the high level of irrelevance, subjectivity, as well as lack of practicality that are inherent in the existing population of models, by systematically exploring the relation between a business enterprise, its underlying key intangible assets, goodwill, and ultimately, corporate brand value. The valuation of a corporate brand, which can be viewed in many cases as one of the most valuable assets held by a corporation, is a function of thoroughly identifying, isolating, and quantifying the economic value of that complex array of intangible asset forces that make up a business enterprise.

Corporate Brand Valuation: Residual Contribution Method

Beacon Valuation Group LLC

This presentation was delivered at the IOM3 Young Persons Lecture Competition National Final held at The Armourers and Brasiers Hall in London on April 13 2011. I was the North West region entrant and won second place overall. The abstract of the presentation is shown below: X-ray Computed Tomography: A New Dimension in Materials Science Almost every area of materials has been revolutionised by the ability to obtain two-dimensional images with an increasing level of details. However, materials science being a three-dimensional science, techniques such as tomography -the art of reconstructing a sliceable virtual three-dimensional replica of the object from two-dimensional images- have become extremely popular. X-ray Computed Tomography or XCT has been around for forty years but it is only in the last decade that the technique has seen dramatic changes through the combination of improved detector technologies for data acquisition and massively increased computing power for data analysis. These changes have allowed imaging to be extended from two spatial dimensions to three dimensions, the realm of X-ray computed tomography. This lecture will present in details X-ray computed tomography: the background of the technique will be first introduced. Then, experiments performed within the Henry Moseley X-ray Imaging Facility will be presented to demonstrate the unique capabilities of XCT for each type of materials: metals, ceramics and polymers. Finally the latest developments will be introduced.

X-ray Computed Tomography: A New Dimension in Materials Science

X-ray Computed Tomography: A New Dimension in Materials Science

X-ray Computed Tomography: A New Dimension in Materials Science

Fabien Léonard

Olimp

Talk given at the 5th Industrial Computed Tomography Conference (ICT2014) in Wels, Austria on the 26th February 2014. This paper presents the first 3D CT assessment of impact damage in coupon size CARALL fibre metal laminates. CT was applied to provide novel 3D insights as to the impact damage produced in both metal and polymer layers of FML. For the metal layers, the presence of yielding/cracking can be assessed, visualised and localised in 3D. For the composite layers, the impact damage can be segmented and rendered in 3D, showing the different damage mechanisms involved (cracking and delamination). The distance transform methodology was employed to obtain through thickness damage profiles. These profiles can be used to automatically separate the segmented impact damage based on damage type.

Impact damage characterisation of fibre metal laminates by X-ray computed tom...

Impact damage characterisation of fibre metal laminates by X-ray computed tom...

Impact damage characterisation of fibre metal laminates by X-ray computed tom...

Fabien Léonard

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сагсан бөмбөг

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Plan (pdf)

Introduction

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

Assessment by X-ray CT of the effect of geometry and build direction on defec...

Assessment by X-ray CT of the effect of geometry and build direction on defec...

Assessment by X-ray CT of the effect of geometry and build direction on defec...

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

Fracture behaviour and damage characterisation in composite impact panels by ...

Fracture behaviour and damage characterisation in composite impact panels by ...

Fracture behaviour and damage characterisation in composite impact panels by ...

Seminario i y ii

Seminario i y ii

Seminario i y ii

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

нэгж хичээлийн сургалтын хөтөлбөр

3D Characterisation of Void Distribution in Resin Film Infused Composites

3D Characterisation of Void Distribution in Resin Film Infused Composites

3D Characterisation of Void Distribution in Resin Film Infused Composites

Corporate Brand Valuation: Residual Contribution Method

X-ray Computed Tomography: A New Dimension in Materials Science

X-ray Computed Tomography: A New Dimension in Materials Science

X-ray Computed Tomography: A New Dimension in Materials Science

Olimp

Impact damage characterisation of fibre metal laminates by X-ray computed tom...

Impact damage characterisation of fibre metal laminates by X-ray computed tom...

Impact damage characterisation of fibre metal laminates by X-ray computed tom...

волейбол

сагсан бөмбөг

1. Сагсан бөмбөг

2. Хичээлийн сэдэв Сагсан бөмбөгийн дамжуулалтын техник Цээжний өмнөөс 2 гараар дамжуулах

3. Хичээлийн зорилго Сагсан бөмбөгийн дамжуулалтын техникт сургах Дасжуулалтын техник эзэмшүүлэх

4. Хичээлийн зорилт Сагсан бөмбөгийн спортын дамжуулалтыг техникүүдийг ойлгож мэдэх Сагсан бөмбөгийг барих дамжуулах зэрэг энгийн чадвартай болох

5. Эхний хэсэг

6. Үндсэн хэсэг