diff --git a/fig/bending.png b/fig/bending.png
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index 0000000000000000000000000000000000000000..2e4d3f13305cc85522b9b81916123585a23d91b1
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diff --git a/fig/bond.png b/fig/bond.png
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index 0000000000000000000000000000000000000000..efe30c625bdd5833647a5483ae7f8819db13f195
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diff --git a/fig/compression.png b/fig/compression.png
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diff --git a/fig/crack_bridge.png b/fig/crack_bridge.png
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diff --git a/fig/matrix.png b/fig/matrix.png
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diff --git a/fig/mkappa.png b/fig/mkappa.png
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diff --git a/fig/pullout.png b/fig/pullout.png
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diff --git a/fig/reinforcement.png b/fig/reinforcement.png
new file mode 100644
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diff --git a/fig/tension.png b/fig/tension.png
new file mode 100644
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diff --git a/tension/fragmentation.ipynb b/tension/fragmentation.ipynb
index 74cc16116e9f45b1bccb8411fef56e7b5ab53612..bcb9c1c798f228342547f04bff3f569e2e21cd12 100644
--- a/tension/fragmentation.ipynb
+++ b/tension/fragmentation.ipynb
@@ -2,8 +2,8 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
-   "id": "hybrid-federation",
+   "execution_count": 4,
+   "id": "miniature-power",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -13,8 +13,8 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
-   "id": "patient-adjustment",
+   "execution_count": 5,
+   "id": "oriental-ordinance",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -23,14 +23,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
-   "id": "headed-conservative",
+   "execution_count": 6,
+   "id": "complimentary-european",
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "08cede9fcb5d4bf5984fdb2ad37e3271",
+       "model_id": "b43db16707024448bf2efb4919a94fc9",
        "version_major": 2,
        "version_minor": 0
       },
@@ -49,7 +49,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "solid-athens",
+   "id": "complicated-christmas",
    "metadata": {},
    "outputs": [],
    "source": []